As expected, Yin Ci Guang understood what he meant.

He bowed slowly, lowered his head and said, "Your Highness, I will never forget your kindness. I will repay you with a grass ring. If I ever betray Your Highness, I will not be able to die a good death."

Yin Chengyu helped the man up and said, "My dear sister, you are too kind. It is normal for brothers and sisters to support each other. I don't need you to repay me for anything."

After all, neither Yin Ciguang nor Rongpin would threaten his position.

In this case, protecting a few people within his ability would be a piece of cake, and he did not do so for the purpose of gaining anything from Yin Ci Guang.

But Yin Ciguang obviously didn't think so. He came to seek Yin Chengyu's protection not to bet on the other party's conscience, but to bring chips.

Now that the prince is willing to protect him, he is not reluctant to return the favor.

"I came here this time because I have something else I want to tell His Royal Highness the Crown Prince."

Yin Ciguang coughed twice again, then continued, "I once accidentally saw the newly favored Lady Xiao, my father. I found that the incense she was wearing was a little strange. I am a doctor through long-term illness, and I have a basic understanding of medical principles. In addition, I am weak and very sensitive to smells. I recognized that the incense she was wearing was the banned Suhe incense."

Suhexiang was a forbidden incense during the reign of Emperor Xiaozong.

This kind of incense has a light fragrance, but it is very strong and can help to increase sexual desire. During the reign of Emperor Xiaozong, a concubine used Suhexiang to gain the favor of Emperor Xiaozong. Later, due to overdose, Emperor Xiaozong fainted from exhaustion, and the harm of this incense was revealed.

Later, the concubine who used Suhexiang was sentenced to death, and Suhexiang became a forbidden incense in the palace.

After so many years, almost no one in the palace knew about Suhe incense anymore, but some elderly people who had experienced the reign of Emperor Xiaozong became maids in the Jiaofangsi and still had this kind of incense in their hands.

Rongpin was from the Jiaofangsi. At that time, there was an old nanny in the Jiaofangsi who treated her very well. She secretly gave her a piece of Suhe incense and told her to use it to give birth to a child.

Later, it was indeed because of this incense that Concubine Rong became pregnant.

Of course, there was no need to elaborate on these old stories with the prince. Yin Ciguang skipped this part and only said, "Although this incense can restore a man's virility, it actually overdraws the body. Over time, it will gradually hollow out the body's foundation."

Yin Chengyu raised his eyebrows, with a playful look in his eyes.

As far as he knew, this Concubine Xiao seemed to be very close to Concubine De.

Concubine Xiao is a newly selected beauty this year. She was born in a merchant family and was given the title of beauty after being favored. Recently, she has won the favor of Emperor Longfeng.

How could the daughter of a small merchant know about this forbidden incense in the palace?

But if the incense was obtained by Yin Chengjing and the person was arranged by Concubine De, it would make sense.

Yin Chengjing kept actors, so it was not surprising that he knew Su Hexiang. And Concubine De was ordinary in appearance and could not please Emperor Longfeng, so it was only natural for him to promote such a Concubine Xiao to consolidate his favor.

"I know. Thank you, eldest sister, for telling me." Yin Chengyu slowly turned the jade ring on his finger, and the look in his eyes changed again as he looked at Yin Ciguang.

Although his elder brother looked frail, he did not seem to be at the mercy of others.

Yin Ci Guang did not ask him whether he was ready to expose Lady Xiao. After bowing to him, he took his leave.

Yin Chengyu was left alone in deep thought.

Suhexiang reminded him of another incident in his previous life.

In the previous life, as Emperor Longfeng grew older, he became more and more obsessed with seeking immortals and Taoism. Xue Shu once invited an old immortal back for him. The old immortal was called Ziyuan Zhenren, who was very proficient in alchemy. Emperor Longfeng and Ziyuan Zhenren met very happily, and then he became more and more obsessed with alchemy. He lived in Yuxi Palace for a long time to cultivate immortality and refine elixirs, and did not care about trivial matters. Even the important affairs of the court were handed over to Xue Shu.

Later, he returned to the Eastern Palace, and because of this, he had the opportunity to supervise the country legitimately and gradually took control of the government.

Although Emperor Longfeng had temporarily stopped thinking about the matter of the demon fox, his desire to seek immortals and learn the Dao had not changed. Now that the treasury had just been a little more abundant, he had already started to repair the Taoist temple and seek out Taoist masters.

Yin Chengyu was happy to see this happen.

In his new life, he was unwilling to waste time on power struggles, and even more unwilling to be constrained by others. However, the conflict between him and Emperor Longfeng was destined to be irreconcilable.

Emperor Longfeng was his biological father after all, and he was a man of integrity, so there was no way he would leave any evidence of patricide behind. So, he could only think of another way to divert Emperor Longfeng's attention.

The Suhe incense mentioned by Yin Ci Guang today is a solution. Emperor Longfeng is already old. If he is addicted to the incense in bed, he may not be able to hold on for long. When he feels powerless, he will definitely seek the way of ghosts and gods like in his previous life.

This was his chance.

Emperor Longfeng was obsessed with seeking immortals and Taoism, and had no time to pay attention to state affairs. As the crown prince, it was only right for him to be the regent.

Therefore, not only would he not expose Lady Xiao's tricks, he would also cover them up for her secretly. Anyway, the person was arranged by Concubine De, and the forbidden incense was found by Yin Chengjing. If something went wrong, the only person who would be unfaithful and unfilial would be Yin Chengjing.

Yin Chengjing always likes to sit back and relax, stirring up conflicts between the two sides. I wonder if he has any backup plan for himself this time.

Yin Chengyu put his hands behind his back and walked out of the pavilion, and ordered Zheng Duobao, who was waiting outside, to check on Lady Xiao: "If you find anything wrong with her, cover it up for her."

The next day, Yin Chengyu ordered Zhao Lin to secretly pass a message to Xue Shu, asking him to come to Ciqing Palace in the evening.

After Xue Shu received the news during the day, he kept looking forward to the night.

He waited until the sun set and the bright moon rose, then he deliberately took an empty path and went to Ciqing Palace.

Yin Chengyu had already instructed Zhao Lin to temporarily send away the guards of the Eastern Palace, so when Xue Shu sneaked into the Eastern Palace this time, he did not encounter any guards and had a smooth journey.

Because it was a private meeting, Yin Chengyu did not meet him in the hall, but in the outer room of the bedroom.

Xue Shu had been here once before, but at that time he was completely focused on Yin Chengyu and did not look around carefully. Now as he walked in from the front door, he noticed that the house was covered with soft carpets.

Now that summer has arrived, the thick curtains of winter have been replaced with thin gauze curtains. When the wind blows from the window, the gauze curtains sway gently, and the candles behind the curtains flicker.

Yin Chengyu sat in front of a huge floor-standing gilded dragon candlestick, his white middle garment dyed a warm color by the bright candlelight.

He was flipping through an ancient book in his hand, his bare feet resting on the soft carpet.

When she heard Xue Shu coming in, she pressed the page of the book with her slender fingers and turned her head slowly, with a bright light in her eyes: "Here you are?"

Xue Shu stopped one step away from him, and looked down at the ground out of habit, but was dazzled by the pair of flawless bare feet.

His eyes trembled slightly, and he raised them quickly, meeting Yin Chengyu's half-smiled eyes: "What are you looking at?"

Xue Shu pursed his lips and looked at him for a moment, the desire in his heart growing like wild weeds.

His eyes greedily locked onto Yin Chengyu, and finally landed on Yin Chengyu's collar. After seeing the unique embroidery on the collar, he could no longer suppress his crazy thoughts and asked instead of answering, "Your Highness, are you wearing the clothes I sent back yesterday?"

He remembered that the collar of the jacket was embroidered with a cluster of green bamboos.

Although it is possible that the same pattern was embroidered on other undergarments, he had an inexplicable intuition: the one His Highness was wearing was the one he had washed.

There was a fire burning in Xue Shu's eyes.

Yin Chengyu glanced at him and snorted, "Zheng Duobao packs all my clothes. How would he know which one was sent by you?"

Without giving Xue Shu a chance to ask more questions, he said, "I summoned you here to discuss something important."

He put down the book, stood up and walked to the table, pointed at the portrait on the table that was pressed by a paper weight, and said, "I want you to find someone."

The person in the painting was an old Taoist priest with black hair and a childlike face, thin cheeks and a pair of bright eyes.

"Who is this?"

"An old Taoist priest, his surname is Peng, his name is unknown. But he calls himself Ziyuan Zhenren. At this time... he may be in Datong, Shanxi."

In the previous life, it took Xue Shu three years to find Master Ziyuan and bring him before Emperor Longfeng.

Originally, Ziyuan Zhenren was just a wandering Taoist priest. He had no ability to seek immortals or seek the truth, but because he grew up in a Taoist temple, he was very good at fooling people. In particular, he was born with white hair, which made him even more deceptive. Although he was only in his forties, he often claimed to be over a hundred years old.

Therefore, wherever he went, the people respectfully called him the Old Immortal.

Xue Shu was originally found in Datong, Shanxi.

But Master Ziyuan was not actually from Shanxi, and Yin Chengyu had no idea where his ancestral home was. Now that he had gone to look for him three years earlier, he was not sure if he was in Shanxi at the moment, so he could only ask Xue Shu to find out first.

"If we can't find it in Datong, we will expand the search area to the surrounding areas."

Xue Shu nodded in response and said, "Your Majesty has recently asked me to keep an eye out for experts from all over the place. If there is anyone who is really capable, please return to Wangjing to discuss it. Is this the expert that Your Highness has found for His Majesty?"

Yin Chengyu looked at him with admiration and said, "Since you already understand, I don't need to bother explaining it to you anymore. Find the person and bring him back as soon as possible."

He removed the paper weight, folded up the portrait, and placed it in Xue Shu's hands.

The slightly cool fingertips touched Xue Shu's fingers and then separated. Xue Shu rubbed his fingertips reluctantly, with a fire in his eyes: "Is there a reward?"

Yin Chengyu sneered and looked at him from the corner of his eyes: "Didn't I just reward you? You are really heartbroken now."

Xue Shu stared at him for a moment and whispered, "The handkerchief is too delicate and won't last long."

Yin Chengyu's smile froze. Although they both knew what the handkerchief was used for, this man was too shameless to say it out loud.

Are you sure you won't punish him?

Yin Chengyu stopped smiling, not liking the feeling of being taken advantage of. He pinched Xue Shu's chin with two fingers, narrowed his eyes and said, "Since you know that the handkerchief is delicate, use it sparingly. It will take at least half a month to go to Shanxi and back. If you wear it out, I won't reward you again."

After saying that, he let go of my hand and said calmly, "I'm going to bed, hurry up and get out of here."

The author has something to say:

Gou Gou: The handkerchief is definitely not...useful (whispering)

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