Chen Xia Li's research found that the artificial sun had been invented at the end of the Xia Dynasty, large-scale machines had been developed at the end of the Shang Dynasty, modern battleships were used in the Battle of Chibi, and steam engines and other technologies were already available at the end of the Ming Dynasty. What is strange is that every time China's history develops into the late industrial revolution, it will retreat to agricultural civilization. Very strange...
