The reason why China’s ancient science and technology was developed but modern science and technology started late

First, ancient Chinese science and technology were mainly practical. Until later books such as Tiangong Kaiwu, they still summarized the experience of predecessors and developed it without forming their own theoretical system. Second, the ancient Chinese scholar, peasant, and industrial and commercial system resulted in the low status of craftsmen.

Third, the sprout of modern capitalism was strangled in the cradle. Without the urgent need for productivity, the driving force for the development of science and technology was lost. Fourth, in modern times, from 1840 to the beginning of the founding of the People's Republic of China, China

It has been in a period of war (with a short period of peace). War is the most effective means of delaying social and economic development. Naturally, it cannot develop.