The waiter didn't mind him since he was a guest of the family. Although the stone looked nice, it was not a gemstone and was not a precious item, so he told Lin Jiuxi everything.

Lin Jiuxi listened carefully, and although he appeared calm on the surface, he was indeed very happy in his heart.

The waiter, the shopkeeper and the customers who came and went did not know the value of the stone. They did not know that the stone was called malachite and was a by-product of copper ore.

Wherever there is malachite, there is copper mine. Once there is copper mine, the most important thing is naturally to refine copper.

Copper has many uses, including making copper coins and various copper utensils. Therefore, all the large copper mines that have been discovered are in the hands of the government. In fact, it is not just copper mines, but also gold mines, silver mines and iron mines. Because these are the lifeblood of the country, private ownership is not allowed.

Especially this copper mine, if it is not controlled by the emperor, then others will take it and make their own copper coins, which will cause currency turmoil.

As for Lin Jiuxi, she did not want to use this metal to make cheap copper coins, but guns, ammunition, and even artillery shells that might be developed in the future all require this metal.

Lin Jiuxi disguised herself as one of Jiale's maids, with the scorching sun on her head and the fan in her hand was for Jiale. Not only was she hot, but she was also sweating profusely.

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At the same time, with the help of the old doctor, Nangong Jing disguised himself as a little medicine boy and entered Prince Xuan's Mansion.

But Nangong Xuan pushed him away, as if he was worried that his brother would get hurt, and patted his brother's hand very lightly.

Seeing Nangong Xuan looking so pitiful and miserable, he became furious. He walked over and grabbed his brother's hand, "Brother, what happened to you? How did you become like this? It was that bitch who harmed you. I'm going to kill her to avenge you!"

Time flies.

It was the old doctor who closed the door.

"Brother Xuan, it's me." Nangong Jing looked at him like this, his nose felt sore, and tears fell. He wanted to continue holding Nangong Xuan's hand, transferring his body heat to him, so that he would not be so cold anymore.

And this is in the summer!

Nangong Jing was stunned. He had never imagined that his brother's condition had become so serious that he couldn't even stand the slightest breeze.

The entrance to the Xuanwang Mansion was jam-packed with people, not just those who came to give gifts, but also those who came to watch the fun, and even small vendors pushing carts, moving quickly in this sea of ​​people, selling their melon seeds, candies, clay figurines, candied peanuts, and mung bean ice.

Nangong Jing opened the door and fresh air came in.

He was like a withered old monster, having lost all moisture, and was dry and with only skin covering his bones. His pale skin, which had not seen the sun for a long time, was covered with blue and purple wounds, and even a few scratches that had not healed.

Nangong Jing walked in and saw a thin body curled up in the corner of the bed, with his hands tightly hugging his knees, dark circles under his eyes, and shivering in the sultry summer weather.

When he reached the gate, he saw two guards holding swords. When they saw the old doctor coming, their cold faces did not improve at all. Instead, they asked, "Why isn't your apprentice carrying the medicine box today?"

The old doctor was old and had been gone for such a long time. He was also uneasy and had cold sweat on his head. "My apprentice was not doing well. He ate too much cold watermelon last night and had diarrhea today. I was afraid of disturbing you, so I asked someone else to carry the box."

The room was clean, but the windows hadn't been opened for a long time and not a breath of cool air had entered, so this disgusting smell had developed.

Under the guidance of the old doctor, Nangong Jing followed him into a closed and smelly room.

"Brother Xuan, take care of yourself. I will take you out." Nangong Jing is not a person who acts on impulse. Until now, Anyang City is still under the control of Zhang Jin, and he has no way to take people away immediately.

As we entered the inner courtyard, it became even quieter. The leaves in the courtyard were all over the ground, and no one was cleaning them.

Even Jiale, who was enjoying the breeze, was sweating profusely and his hands and feet were numb. Seeing a small vendor passing by their sedan chair, Jiale quickly stopped the person and asked for a few cups of sour plum soup. In addition to himself and Zhang Chen, even the servants who followed them had some.

But she was busy and had no one around, so she could only keep the matter in mind and check on it after she had dealt with the things at hand.

Of course, it is best to be able to grasp it as early as possible.

This was totally different from the handsome, gentle and refined Brother Xuan in his memory.

Fortunately, the two guards only thought that the old doctor was old and weak, and did not suspect anything. However, they still stopped Nangong Jing and checked him, and even looked inside the medicine box carefully. When they found nothing suspicious, they let them in.

This life is made by the small vendor himself using simple bamboo tubes. It is simple and interesting.

Nangong Xuan's hands were ice-cold, and his fingers were so thin that only skin and bones were left. The long nails on his fingers had not been trimmed by anyone, and they looked like some kind of weapon, and were dark blue in color.

Nangong Xuan quickly withdrew his fingers. He raised his eyes tremblingly and looked at Nangong Jing. His chest seemed to rise and fall more. He licked his dry lips, "Aduan..."

Unlike the bustling front yard, the backyard where Nangong Xuan was recuperating was extremely quiet. Especially when one could hear the loud gongs and drums outside and the bustling guests, there were only two or three silent servants sweeping the floor here.

A hoarse voice came from the inner room, "Close the door, close the door quickly! Do you want to freeze me to death?"

On the day of Madam Zhang's birthday, the whole city of Anyang was decorated with lights and was bustling with activity.

Nangong Xuan shook his head. "Don't take risks. You are a man who can accomplish great things. Coming to see me is already a sign of brotherhood between us. I can't let you take risks like this."

"You have always been a brave child. I remember that you were only three years old at that time, but you dared to jump into the pond to catch frogs, but you caught a toad instead. It was really scary to see you covered in mud." Nangong Xuan smiled on his dry face, gentle and weak.

The two brothers hadn't been together for a long time, and they talked about the brief and gentle time they had in the palace when they were young. At that time, the late emperor was still alive, and the capital might still be in turmoil, but it had nothing to do with them when they were young. While they were forced to study and read, they still remembered some gentle days.

They talked about everything from the gossip in the capital to the Nangong Jing uprising. Nangong Xuan was still as gentle as before: "I understand your suffering. Since this world belongs to our family, don't endure it if you can't. No matter which brother becomes the emperor, this is our world. Just don't lose it."

"Brother Xuan, I won't." Nangong Jing swore solemnly.