飞艇公式规律

简介：However, I know in this world that the Ming army did not promote the use of turtle-foot muskets. In fact, there were difficulties. Because the turtle-foot muskets have a complex structure and high cost. The national financial resources are not enough to support them. They can only produce them in small batches because they are produced in too small quantities. Jianlu's cavalry army did not play a big role at all, so it did not leave any traces in history.