Dr. Xu stood on the stage and finished today's class. After giving a lecture, he assigned a little homework, then picked up the teapot and left. As a doctor in the Academy of Truth, he not only lived a leisurely life, but also was very respected. After all, the title of doctoral student cannot be awarded easily. Only scholars who have reached a certain level of knowledge in a certain field can get this title.

However, just as Dr. Xu left, he saw someone blocking his way, and then bowed respectfully and said, "Dr. Xu, I have a question below to ask you for advice!"

When Dr. Xu saw this young man from the Western Regions who was tall and deep in front of him, he felt a little headache. It is of course a good thing for students to be studious, but if a student is too studious and often asks some very tricky questions, and even a doctoral student cannot answer, the feeling will not be very good.

"Well, do you have any questions?" Although he had a headache, Dr. Xu asked calmly. He knew that the student named Wulube had an extraordinary background, and that His Majesty personally sent someone to send him to the academy to study. He even knew that there were often some Jinyiwei around Wulube, and it seemed that he was often staring at his movements in the academy.

"Sir, the prince-consort had gravity at the beginning. This gravity existed between any two celestial bodies, but it did not explain clearly what gravity was everywhere? In addition, can this gravity be calculated to calculate the magnitude of the force?" Wulube immediately explained his question.

When Dr. Xu heard this question, he was stunned, and then he said with admiration: "You can think of this question, which means that you have learned a lot during this period, but we have not yet found an agreement on these two questions. If you are interested, you can go to the observatory with me, where I have some information on this."

"Okay, let's go now!" Wulube immediately said excitedly when he heard this. In fact, these two questions had troubled him for several days. For this reason, he also asked several assistant teachers in the academy, but they could not answer, so Wulube came to find the most knowledgeable Dr. Xu.

At present, Dr. Xu and Ulube left the classroom. Astronomical science is one of the earliest disciplines in the academy, so it occupies a lot of land. The expensive observatory is located in the building center of the astronomical science. Many doctors have moved their office rooms under the observatory to facilitate recording of various observed astronomical phenomena.

Dr. Xu's room is also under the observatory, next to the library of the astronomical sciences. This library contains various astronomical works, as well as various data observed by the observatory. Ulube likes to come here the most, and stays all day long.

Xu Boxue brought Ulube to his room and then took out some research materials on gravity. Where does gravity come from and what is its essence? It seems that there is no definite answer to this question in later generations, let alone in this era.

Therefore, Dr. Xu's research can only start from various conjectures, and mainly studies the gravity between celestial bodies. However, even these are enough to make Ulube obsessed with it. What he was most interested in since childhood was astronomy. Whenever he looked up at the sky, it would arouse his endless imagination.

When Li Jie found Wulube, he was having a heated discussion with Dr. Xu. The two seemed to have made new discoveries in the discussion. While discussing, they were also recording something excitedly, which made Li Jie feel embarrassed to go in and disturb him, so he stood outside the door and waited.

When Wulube and Dr. Xu were about the same discussion, they found Li Jie outside the door. Both of them were stunned. Then Li Jie also came in and said hello and stated that he was here to look for Wulube.

Dr. Xu and Li Jie are also acquaintances. When they learned that Li Jie was looking for Wulube, they wanted to give up their room so that they could talk about it, but Li Jie proposed to go outside with Wulube, so the two of them said goodbye to Dr. Xu and left.

After leaving the room, Li Jie praised Wulube and said, "You are stronger than I thought!"

Of course, Wulube knew what Li Jie meant, but he sighed and a mature look appeared on his young face, saying, "Actually, I couldn't accept my father's actions at first, but later I figured it out that my father's return is much better than me. After all, now only he and his cousin have the ability to clean up the domestic mess, and the only thing I can help them is to stay in the Ming Dynasty as a hostage."

"You are so open-minded, but it's good to think like this. At least you can cheer up and take advantage of this time to do something you are interested in. If you return to Samarkand in the future, you may not have such a chance." Li Jie said with emotion at this time.

However, what Li Jie never expected was that Wulube showed a confused look when he heard his words. After a while, he suddenly gritted his teeth and said, "I don't plan to go back!"

"What?" Li Jie was shocked when he heard this, and immediately turned his head to look at Wulube beside him, his eyes full of incredibleness.

However, compared to Li Jie, Wulube seemed very calm at this time. He turned his eyes to the distance and then slowly said: "I was born in a noble family since I was a child and received strict court education. Although such education is very depressing, it also exposed me to more knowledge and made me find the thing I am most interested in, that is, astronomy."

Wulube paused at this point, and then said, "Before coming to the Ming Dynasty, I had too many questions about astronomy, and no one could answer these questions for me. However, after coming to the Ming Dynasty, many of the questions in my mind had been answered, and I also met scholars as knowledgeable as Dr. Xu."

"There are many friends who have the same interests as me. They can discuss the problems they encounter in astronomy every day. This kind of life makes me feel very fulfilled. I wake up every day with motivation. This is a life I have never experienced before. So I have been wondering whether I will go back. When I heard your words from the prince-concubine just now, I suddenly made a decision."

After listening to Ulube's monologue, Li Jie was stunned for a while, and finally hesitated for a while and asked, "Is the reason why you are unwilling to go back is because you hate your father that you made such a decision impulse?"

"I'm not hiding the prince-consort, there are indeed reasons for this!" Ulube said frankly again, "But this is not the main reason. What really made me decide to stay is that all aspects of the Ming Dynasty have greatly attracted me, so I decided to stay here and live!"
Chapter completed!