Yinreng has had the habit of keeping diaries since he was a child. This time, Kangxi's departure made him feel very touched. Xiaoma suddenly left Laoma's side, and there was no warm and secure harbor for him to rely on, and he suddenly felt helpless and lonely.

"This is the first time that Khan Ama has left alone in the palace and went out by himself... Why can he feel at ease?"

Yinreng was frowning and when no one could tell, he looked for the "trash can" Xiao Si Yinzhen to pour out the bitterness.

"The Gu is no longer Khan Ama's favorite son."

Yinzhi rolled his eyes to the sky and turned his back to him.

"You are eleven years old and it's time to wean."

Yin Nei said coldly.

"Gu Shisui is only ten years old, he is still a child!"

"Don't wean it alone, you won't grow taller if you wean it."

Yin Nei didn't want to talk to him and threw out a math problem.

Yinreng wrote down his longing for Kangxi in his diary sadly, and wrote a letter sent by a courier to Kangxi. The letter was like his open and straightforward personality, and at the beginning he expressed his longing and his expectation for him to return soon.

Yinreng: I used to have Khan Ama by my side, and my heart was at peace. Today, I am like a bird flying alone for the first time. I just feel that the vast world is stranger everywhere, lonely and helpless, and I miss the days I used to be by Khan Ama even more. I miss you, come back soon!

After the letter was sent out, Kangxi and his party had just walked out of the Hebei border and were about to cross the river to the south.

Eight hundred miles rushed to send Yinreng's letter to Kangxi's imperial guards. When the emperor saw it, he felt that it was both funny and relieved.

"Baocheng is too dependent on me. He will grow up one day!"

Kangxi was helpless and smiled strongly, and he also wrote a reply.

In the letter, I said peace first, and then I said, "Don't worry," and mentioned some ways to deal with government affairs, and finally said: I will come back as soon as possible within two months.

Then, Kangxi assigned homework to Yinreng and asked him what plans had he planned with Yu Chenglong before.

When Yinreng saw Khan Ama’s reply, he smiled and said, “Khan Ama is waiting for Gu to reply! He read the letters he wrote to him, and he was still looking forward to Gu’s writing one.”

If not, why would it be to assign homework and ask about plans?

[So not only my elder friends miss my father, but he also misses and cares about my elder friends!] Yinreng suddenly felt much better, and his eyebrows were curved with smiles.

Yinreng cheered at the little beauty who comforted him: Ouye! Khan Ama is not at home! He will not come back in two months!

【???

"Amma Khan is not at home, so no one will stop me from going to see my brother!"

Even if the news about his younger brothers reached Khan Ama's ears, he would not have time to stop him. When he came back, this matter would have been overturned and he could not do anything to him.

There are no tigers in the mountains, and of course the monkeys are called kings.

Yinreng also gave himself a layer of insurance. He also gave him a greeting to Kangxi in his reply, and then sent a letter to Yinzhi alone, which told him about his miss and Empress Hui's miss.

At normal speed, Khan Ama and his team did not go far, and the reply message would be delivered within two days.

When Yinzhi's reply arrived, Yinreng finished handling the government affairs of the state. In the afternoon, he asked Madam Xu to come with a pair of elegant mahjong made of white jade. He sent someone to inform Concubine Hui and took the reply letter to visit Concubine Hui.

Empress Hui was well maintained, perhaps because she had never given birth after Yinzhi. Her figure was slim and slender. When she compared her successive births, one was like a willow branch and the other was like a balloon.

Yinreng gave Yinzhi's reply to Concubine Hui: "Brother and Khan Ama are learning the knowledge of river control. This time I went to Jiangnan to see many scenery completely different from that in the Forbidden City."

Concubine Hui smiled and said, "I want to thank Your Highness for staying in the capital for governing the country. She is busy with official duties and I specially went to the harem to tell me."

Yinreng said: "This is just a small matter. When Khan Ama goes out, Gu will take care of his brothers on his behalf. This time, Gu cannot be with Khan Ama to be filial. Everything depends on the elder brother. It is also beneficial to contact him more. We are brothers, and we can still share the worries of Khan Ama together when we grow up."

Concubine Hui smiled and nodded, and took the initiative to mention: "The Seventh Prince and the Eighth Prince just woke up from a nap. Do you want to see them?"

Yinreng smiled and nodded: Empress Hui, you understand! What an active and good person, no wonder he has had a good relationship with Empress Rong for so many years.

When Xiaoqi was a child, he had legs and had scars left by surgery at the bottom of his legs. He swayed like a little penguin.

Xiaoba is three years old and has a pair of beautiful eyes like a big girl. People in the palace say that he looks like his mother, and his biological mother Wei is indeed a rare beauty. She can be favored and conceive Xiaoba with a humble identity.

Both younger brothers were innocent. Yinreng gave them one of them a tumbler and a nesting doll made of wood. The big doll was covered with small dolls, layer by layer, and ten layers were covered with the largest one. The largest one was only as big as a head, while the smallest one was only as big as a fingernail. Each doll looked the same and had a different color. They could be lifted from the middle to reveal the next doll in their belly.

Yinreng coaxed his two younger brothers to play for an hour, and finally, because Madam Xu persuaded him that it was time to go back to study, he had to say goodbye to Concubine Hui.

The next day, he went to the study room again, went to find the little three, four, five and six, listened to a lecture by the Grand Tutors, gathered the four younger brothers to tell them stories.

After the class in the study room was over, Yinreng took Yinzhi and went to pay homage to Concubine Rong and talked to Concubine Rong.

In the evening, after Yinreng finished his studies, he wrote to Kangxi again. On the lonely night, he could only remember Khan Ama's "sound, appearance, smile and appearance".

Yinreng wrote: On the tenth day after Khan Ama left, my son missed you.

The next morning, the sun was as bright as Yinreng’s good mood: Ouye! Khan Ama is not at home today!

【…】

Khan Ama is not at home, so no one is asking him not to mess around. He can send someone to do whatever he wants!

Yinreng urged Chen Mengqiu: Gu wanted a rubber tree, but Gu wanted a rubber tree for many years.

Chen Mengqiuguo really bought a rubber tree for him.

The East India Company in England was very popular with the tea from the Qing Dynasty and was willing to buy tea and porcelain at high prices and sell them other things they needed.

Unlike the caravans of the Qing Dynasty, behind the "East India Company", the king of England was supported by the support of the "East India Company" served the royal family, and the royal nobles were very popular with Eastern tea, porcelain, silk, and jade. Due to the maritime ban in the past few years, the situation of rare things being expensive, so that Chen Mengqiu, who mastered this trade route, could offer a price all over the world and ask them to purchase a large number of rubber trees at a low price.

It takes time to transport rubber trees. In order to deal with pirates, there are soldiers and gunners on the merchant ships of the East India Company. This is also the case that Chen Mengqiu mentioned in his book to Yinreng: The sea merchants in the Qing Dynasty were almost extinct due to the sea ban. Now, the opening of ports in many places has prompted the formation of new sea commerce. However, without the support of the court, sea merchants are in a dilemma of difficulty in protecting themselves in the maritime trade in the south. They are unable to protect themselves when encountering pirates. They can only spend a lot of money to hire people from other countries, who call those people "mercenaries."

Yinreng had close contact with Fujian, and these natural actions naturally came to Kangxi's ears. Someone would report to Kangxi what Chen Mengqiu had transported for Yinreng again.

Before the rubber tree arrived in the capital, Yinreng reported to Kangxi about this kind of thing that could be used as "elastic" substance. If the carriage has tires made of rubber, it can reduce bumps. If you wear rubber shoes on rainy days, you don’t have to worry about water leakage on your feet. If you wear rubber shoes to step on the mud, you don’t have to worry about your feet being corroded by harmful things in the mud.

Rubber can also be used for gloves, cuju, basketball, etc. With such trees, it can improve existing life.

When the rubber tree arrived, Yinreng sent someone to find a way to extract rubber, study the manufacturing process, and took the lead in making a carriage with rubber tires, and sent people to the south to welcome Kangxi's return.

He also ordered people to make some rubber balls for their younger brothers to play with.

Seeing that Yinreng was addicted to studying rubber, he seemed to be indifferent to learning and was abandoned, so he hurriedly joined forces with the imperial envoy to report a reminder.

"Like rubber is just a path. Your Highness will only give it to the craftsmen to study. Are you the crown prince or should you spend your energy on learning how to govern the country!"

Yinreng was startled by Sha Cheng's old face. Seeing that he was busy with official duties, Sha Cheng, who was avoiding him when he saw him, was finally willing to come up on his own initiative and smiled happily: "Mr. Sha finally no longer avoids orphans!"

"Come on, Lord Sha, look at this mechanical engineering book. Although it is in English, its knowledge has a good inspiration for water conservancy construction and river management!"

There are many books that Chen Mengqiu bought from the East India Company here. Not only that, he also bought Western paintings, poetry, musical instruments, etc.

Sha Cheng: "I have not finished my official duties, so I would like to ask Your Highness to forgive me for taking my leave first."

Yinreng: "Hey? Lord Sha, don't leave!"

"Since Lord Sha has no time to study this, I sent this book to the Ministry of Works."

Yinreng felt a little sad: Alas! Khan Ama is not at home, and even Lord Sha Cheng is not willing to take care of the orphan.

At this time, I missed Khan Ama again.

As night fell, it was time to miss Khan Ama again, Yinreng wrote another letter to Kangxi.

After missing Khan Ama for a cup of tea, Yinreng became excited and couldn't sleep. He got up and picked up his pen and wrote a letter to the author of "Objects Moving in Orbit".

Yinreng didn't know if this letter could be delivered to the author. He really wanted to have an in-depth discussion of physics knowledge with the author.

In the letter, he put forward his own opinions, praised the author's content, reflected on his own doubts, expressed his hope that he could further discuss with him.

Yinreng also thought of himself a pseudonym, called "Ace".

He thought about it and said seriously: "Well... I have read Newton's book. Now I might as well send him a book to read."

He sent someone to package the refined book of "The Book of Changes" and sent it to Chen Mengqiu, hoping that through Chen Mengqiu, he could hand these things over to Newton himself.
Chapter completed!