Li Er still looked at Gu Qing suspiciously. The monarch and ministers stopped talking. The Ganlu Palace fell into silence again. The sunlight entered the palace and shone on Gu Qing. After a long time, Wang Qin walked in, "Your Majesty, the time for meals has come."

"I understand." Li Er waved his hand to Wang Qin and asked Gu Qing, "I have seen Su Dingfang's memorial. I also understand what you did to Tubo. Do you want to assimilate Tubo?"

"Just do it casually."

"You go back."

Gu Qing saluted first, "That's my turn to leave first."

Li Er nodded and said nothing.

East Palace

The East Palace has now become the second Secretariat of the Secretariat, and Chu Suiliang is helping the prince to handle the memorials left by various places.

There are many officials here in Li Chengqian who are discussing political affairs. Although they are resting, they are still not idle as the prince. The Persian king has already announced that Persia has become a vassal state of the Tang Dynasty and sent troops to station Persia first, and now they will be sent to Persia.

Looking at the list in his hand, Li Chengqian was reluctant to write.

"Your Highness, Prince." The official from Hongwenguan walked and said, "There were thieves near Youzhou. This was an emergency report from Youzhou."

He took the report from Li Chengqian and said, "Send troops from the government to suppress it."

Another official came with a memorial, "Your Highness, this is a memorial from the two Jiangnan roads,"

Merchants from Jiangnan hoped to join this maritime trade. After reading this memorial, Li Chengqian fell into hesitation. Gu Qing has always been in charge of maritime trade. Since the port was established, his father had already agreed to let Gu Qing take charge of maritime trade. Only Gu Qing knows the most about maritime affairs.

After several thoughts, Li Chengqian handed the memorial to Chu Suiliang.

After reading it, Chu Suiliang said to Li Chengqian with clarity, "Your Highness the Crown Prince can preside over the meeting between merchants in Jiangnan and Gu Qing. His Majesty also handed over the matters of the East China Sea to His Highness. Although Gu Qing was fully responsible for presiding over the sea trade, His Highness the Crown Prince also has the right to inquire about it."

After hearing Chu Suiliang's words, Li Chengqian looked at his busy East Palace. He came to his senses and found that he could not command Gu Qing. Although he had no power in the court, whether it was due to his father's trust in Gu Qing or compared with Gu Qing, before he knew it, Gu Qing seemed to have become a mountain in his heart, an insurmountable mountain. This mountain made him unable to overcome it. Gu Qing had too many achievements.

Even if he becomes emperor in the future, he may be able to overthrow himself with just one word of Gu Qing. His father is right. Gu Qing has a double-edged sword that can expand territory, suppress Mobei, and destroy Tubo. No one dares to offend the Hexi Corridor, and can cause trouble in the world.

"Your Highness the Crown Prince?" Chu Suiliang looked at Li Chengqian's expression in confusion.

"Chu Suiliang." Li Chengqian whispered, "Do you think Gu can control Gu Qing?"

"No." Chu Suiliang said very directly, "Your Highness the Crown Prince did not discover the way Gu Qing gets along with His Majesty?"

Li Chengqian's memorial was not put down for a long time, "How do you say this?"

"Although Your Majesty and Gu Qing are monarchs and ministers, there are many ways to fit each other, and more to gain mutual benefits." Chu Suiliang bowed and said, "Your Highness the Crown Prince cannot think about controlling Gu Qing, but to get what Gu Qing needs. This person has a perverse personality and is casual in dealing with things. Fortunately, he has no desire for power. Your Highness the Crown Prince may as well sit down with Gu Qing and have a long talk, and he will gain something."

The East Palace is very busy

Gu Qing also started to get busy when he returned home. The principle of Xiaokong imaging was very simple. Mozi and his students had studied this principle as early as that time, but it was not easy to make a camera.

Li Zhi sat aside and watched Gu Qing fiddle for a long time, but still couldn't understand, "Gu Qing, why is this shadow upside down."

"Because it only spreads in a straight line." Gu Qing was busy, "You don't understand even if you said it. Can Your Highness King Jin find some craftsmen?"

"Do you want something in the palace?"

"No need." Gu Qing said, "Just find a few people who know how to do wooden work, it's not difficult to do a secret."

"What the hell are you going to do?" Li Zhi asked in confusion.

"Camera." Gu Qing thought, "A thing that can leave human images. Does Your Highness Jin know what optical imaging is? Do you know the illumination of light? Do you know the speed of light propagation?"

Li Zhi shook his head vigorously.

"If you don't know, just hurry up and find a few craftsmen who can do wooden jobs."

Li Zhi walked out of Gu Qing's laboratory, threw the door and came to the courtyard with a dark face, "Fan Jian, come here for me."

"What are the instructions of Your Highness King Jin?" Fan Jian hurriedly walked over.

"Gu Qing wants a few craftsmen who are good at work in wooden work to make something called a secret box." Li Zhi said, "Hurry up and find a few craftsmen to come over."

"Yes!" Fan Jian left respectfully.

Camera? Li Zhi thought about what could leave behind human images? Is this Gu Qing’s plan to make money again? If he could rush Gu Qing to do it in front of him and then hand it over to his father, would the father be happy?

Thinking of this, Li Zhi immediately gave up the idea. Haven’t even heard of the camera thing Gu Qing would leave it to himself?

Gu Qing was busy for three days at home, and Fan Jian came with something carefully, "Head of the family, this board is ready."

Putting on gloves, Gu Qing held this silver-plated copper plate and had polished it. If there was a camera, it would be impossible to lack this thing, "It's very good."

Fan Jian smiled bitterly and made this thing a waste, because this silver-plated skill made many blacksmiths leave.

"Fortunately," Gu Qing accepted the copper plate, "You go and find your wife to pay some money to those craftsmen, and you can also get some of them."

With this silver-plated copper plate, there is still something that is iodine. In this era of scarcity of photosensitive materials, we can only find iodine and silver. Where can we find iodine?

After thinking hard, I found Sun Simiao, "Master, do you know something called iodine?"

"Is it a medicinal material?" Sun Simiao asked.

"It shouldn't be." Gu Qing shook his head.

"I haven't heard of that." Sun Simiao was observing Yang Sheng's saffron in his hand, and he still smelled it from time to time and didn't know if he would eat it.

"What should I do if someone has big neck disease these days?" Gu Qing hesitated.

"Big neck disease?" Sun Simiao said in confusion when he heard the term, "You are talking about goiter disease, and this is not impossible to cure."

"Hmm?" Gu Qing looked at Sun Simiao with interest.

"This can be cured with black pot cabbage," Sun Simiao said lightly.

"Black Snacks?" Gu Qing said in confusion, "What black Snacks."
Chapter completed!