Yan An got up early the next morning, had breakfast with his family, and then returned to Zi An Courtyard. He released the golden eagle, and both he and the bird waited for Yue Xiyuan's whistle.

Around noon, the golden eagle heard the whistle and flew towards the Regent's Palace. Soon, the golden eagle returned with a letter, which read, "Mo Zichen has arrived at Ji Ren Hall and entered through the back door."

Yan An quickly changed her makeup and left the mansion, heading to Ji Ren Tang without Bai Su accompanying her this time.

At the back door of Jirentang, Yan An saw Yue Xiyuan waiting for her at the door. "Little brat, you still know to wait for me at the door."

Yan An strode towards Yue Xiyuan, "Sorry to keep you waiting, are they inside?"

"Mo Zichen has been here for a while now and should be preparing for his medicinal bath. Yesterday, a small team of assassins did go, and not a single one survived. An Yi said that the assassins seemed to be there specifically to kill Mo Zichen, their attacks were deadly, and they also stole the water from Tianshan Mountain."

"Thank you." When Yan An first met Mo Zichen, he was also being hunted down. In the past eight years, it has been the same. Even though he was suffering from a terminal illness, they still did not let him go. Yan An was afraid that the poisoning was also done by them. Yan An's eyes were cold.

"Um... An Yi said he has something he wants to tell you personally." After dealing with the assassins yesterday, An Yi used the corpse-dissolving water that Yan An gave him and was shocked. The corpse-dissolving water they usually used could only turn the corpses into a pool of blood, but today's corpse-dissolving water did not leave a trace of blood. After An Yi returned, he wanted to ask the prince to ask Yan An for more.

Yue Xiyuan is so arrogant. The key is that he hasn't even won her over yet, so it's too embarrassing to ask for things. He simply told her that An Yi needed to see her.

Upon hearing this from the shadows, An Yi nearly fell off the tree, thinking to himself: "No wonder the prince usually has An Si following him around, why did he call me today?"

"Dr. Luo, I have a favor to ask."

"You want this?" Yan An took out another bottle of corpse-dissolving water.

An Yi's eyes widened. "Mmm...mmm...yes, yes, yes."

"Here you go, this is all I have. I'll make some more for you later." An Yi hugged it like it was an incredible treasure, and wisely leaped up into the tree in an instant.

"Let's go in." One tall, one short; one handsome, one beautiful; their backs were a perfect match.

"Why are you here? I'm preparing a medicinal bath for Mo Zichen. Please wait a moment." Su Jingzhan saw Yan An and, despite his excitement, didn't show it too much. But remembering Yue Xiyuan's warning to him that day, he didn't want to get beaten up.

"May I go in and say a few words to him?" Yan An asked Yue Xiyuan.

“Go ahead, we’ll wait for you outside. Call me if you need anything,” Yue Xiyuan replied.

Outside the door, Su Jingzhan asked anxiously, "Xiyuan, are you really going to let Doctor Luo in like this?" He knew that Yue Xiyuan had feelings for Doctor Luo.

Yue Xiyuan rolled his eyes at him. How could he not be worried? He knew that Mo Zichen's appearance was no less than his.

Yan An entered Su Jingzhan's alchemy room. In the middle was a large wooden tub used for medicinal baths, and next to it stood a thin man wearing a mask. He was gentle and refined, which reminded Yan An of a saying: "He can only be admired from afar and not touched."

"Jingzhan, are you ready?" Mo Zichen thought it was Su Jingzhan who had come in, so he turned around and asked.

Seeing that the person who entered was a woman who looked somewhat familiar, they asked, "Miss, is there anything I can help you with?"

"Has Master Mo ever been to Ledu? Did you meet a girl on your way there who said you were very beautiful?" Yan An asked excitedly.

"Little An'an, is that you?" Mo Zichen looked incredulous; he had encountered that little girl.

"It's me, Brother Mo Chen, I've come to find you."

"It's good that you're alright. Qianfeng said you left, and I was worried about you. I never expected to meet Xiao An'an here. Even if Brother Mo Chen dies, he can rest in peace." Mo Zichen was a little excited and coughed a few times.

"Brother Mo Chen, I'm not a child anymore, and you can't call me An An now, you have to call me Luo Zhi." Yan An smiled slyly.

"I didn't expect it to be Doctor Luo. Then I, Mo Zichen, would like to greet Doctor Luo." Mo Zichen said jokingly.

"Brother Zichen, you're making fun of me."

"Hahaha, cough cough cough..." Mo Zichen coughed loudly several more times, and the last cough even brought up blood.

"Yue Xiyuan, Su Jingzhan, come in quickly, Brother Zichen is coughing up blood."

Hearing Yan An's shout, Su Jingzhan, who was outside the door, pushed the door open and entered. "You're in danger now that you're calling him Brother Zichen."

At this moment, Yue Xiyuan saw Yan An supporting Mo Zichen with a worried expression, while Mo Zichen gently patted Yan An's hand that was supporting him, saying, "It's okay, don't worry, it's just an old ailment."

Wol Seok-won: How could I not be worried? My wife is about to be snatched away by someone else.

"Yue Xiyuan, you must heal him. He is my most important family member, the brother I finally found. You must save him." Yan An looked at Yue Xiyuan and then turned to Su Jingzhan, pleading.

"My goodness, don't look down on me! Even if you could save me, there's no medicine. Besides, your medical skills are far superior to mine." Su Jingzhan felt extremely aggrieved, but dared not say it aloud. He could only mutter to himself that Mo Zichen was the biggest stumbling block on his path to becoming a doctor.

"My master said that his poison requires a medicinal bath with water from the Tianshan Mountains. Now that his poison is in dire need, I will go and make preparations. I will try to get the water from the Tianshan Mountains first."

Su Jingzhan poured all the prepared medicinal herbs into the bathtub and added water from Tianshan Mountain. Mo Zichen, wearing only his undergarments, then climbed into the bathtub.

Fifteen minutes later, Mo Zichen's complexion improved somewhat, and the water in the bathtub turned black. Su Jingzhan helped Mo Zichen out of the bathtub and changed his clothes.

"It seems to have some effect, but Master said that Zichen's poison needs to be treated by soaking in the medicine for seven consecutive days. Moreover, the medicinal bath alone is not enough; he also needs to take an antidote pill. However, the most important ingredient has not yet been found."

"Won't my antidote work?" Yan An asked Su Jingzhan.

“No, not one can be missing. I have studied the antidote pill you developed. It contains common medicinal materials, but there is one ingredient that is crucial that I have not been able to figure out. If this ingredient can be added, the antidote combined with the medicinal bath will definitely clear away all the toxins that Zichen has accumulated over the years.” Su Jingzhan shook his head.

Although Mo Zichen had long known this would be the outcome, he was still unwilling to accept it, and his face, which had just regained some color, turned pale again.

"Brother Zichen, I said eight years ago that I would definitely cure you. Don't worry about the water from Tianshan, I have it." The water from Tianshan in Yan An's space is inexhaustible, and can be used directly for Mo Zichen's bath.

Eight years ago, Mo Zichen had already met Yan An. Just now, he said that Mo Zichen was the most important person to him. Yue Xiyuan seemed to automatically ignore the word "family" in his family. At this moment, Yue Xiyuan's inner thoughts were unusually rich.

Everyone present was astonished by Yan An's words. That was water from Tianshan Mountain, a rare find that comes only once in a century. It was already extremely rare to find even a small bottle of it.