The doctor of Mathematics, Physics and Chemistry has returned to the Chongzhen period. It is only a dozen years since the end of the Ming Dynasty. Steam engines, Jenny textile machines, steam engine ships, rear-loading rifles... An industrial revolution is unfolding step by step in the Ming Dynasty. PS: The author is a 985 engineering student
Reminder group: 914470008 Internal group: Friends who are good at chemical industry, military, agriculture, finance and other fields, please join the group with the cute girl Flying Angel. The starting point