Kangxi ordered that such advanced medicine and knowledge should not be known to the people. On the way to Galdin, Kangxi contracted malaria. Malaria was a very refractory disease in ancient times, and very few people survived malaria in history. An incurable disease, plus he is in the wilderness of Mobei at the moment. Ministers have no choice but to recruit good people from all over the world to treat diseases. As it happens, westerners have specific drugs to treat this disease. In the case of being rushed to the hospital, Kangxi's body unexpectedly improved after taking the medicine.

Kangxi realized that there was more advanced and richer knowledge outside the place where he ruled. After his recovery, Kangxi praised the specific medicine possessed by westerners as a magical medicine, and asked the westerners about the origin of this medicine. Westerners told Kangxi that it was just a very common drug in their own country. Kangxi understood that there were more advanced affairs from abroad, and he found that West Renye Fang was proficient in advanced academic knowledge such as mathematics, philosophy and astronomy.

But Kangxi knew imperial politics well. Kangxi benefited a lot from his communication with westerners, but at the same time, Kangxi's imperial thoughts over the years told him that if these news spread, the world he was in charge of would surely usher in a new baptism. Therefore, Kangxi's first idea of missionary knowledge was not to popularize it among the people, but to suppress it. So Kangxi casually ordered: these medicines and knowledge must not be passed on to the people.

So Kangxi let the people miss an opportunity to advance their thoughts. Kangxi and the emperor's thought of the same clan after that led to the Qing Dynasty being out of touch with advanced things from the ruling class to the common people, and contradicting foreign advanced culture and industrial technology from the bottom of my heart. It was not until the invasion of foreign powers that the reform was realized and implemented.