Did the Qing emperor know that the earth was round?

Of course, since the Eastern Han Dynasty, most emperors thought that the earth was round unless he was ignorant. In ancient times, China was generally regarded as a "round place". However, during the period of Emperor Wu of the Han Dynasty, a minority scholar named Luoxiahong appeared in Bashu. He put forward the theory that the sky is a sphere and the earth floats in the middle of it. At the suggestion of Sima Qian and others, Luo Li was made. Because the calendar of Luoxiahong is more accurate than other calendars, it was chosen as the official calendar and called taichu calendar. Sunset red was also awarded to the servant. But at this time, I'm not sure what shape it is, and I don't know whether Emperor Wu of the Han Dynasty believed in Huntian. During the Eastern Han Dynasty, Zhang Heng developed Huntian theory. The basic pattern is: the sky is like a chicken, the ground is like a yellow chicken, and you live alone in the sky. At the same time, I believe that "the surface of the universe is infinite, and the end of the universe is infinite." In other words, the sky is like an infinite egg, and the earth is like a limited yolk. At the same time, the opposite theory of covering the sky also abandoned the original theory that the sky is round and the earth is round, but thought that the earth is a hemisphere with its extreme vertex in the north. However, in a debate in the imperial court, Huntian theory defeated Gaitian theory and was appointed as the official theory by Emperor Han An at that time. But there are still many scholars among the people who believe in Gaitian's theory. At that time, both the theory of Huntian and the theory of Gaitian were not only a metaphor, but a mathematical model supported by strict observation data and calculation methods, which provided theoretical basis for calendar formulation. With the progress of astronomical observation and the accumulation of data, a group of monks in Xuanzong period of Tang Dynasty completely overthrew the theory of Gaitian and made Dayan calendar as the official calendar for Xuanzong. Since then, Huntington's theory has become a public opinion. Of course, the ancients did not study this knowledge because they were full and had nothing to do. Agricultural nationalities need accurate astronomical models to make calendars, while commercial nationalities need accurate astronomical models to navigate and locate. So this knowledge has a lot to do with the fate of ancient humans.