To put it mildly, he is trying to be a man and a minister. To put it mildly, he wanted to stop the tide of history by himself. Generally speaking, there are three ways to defend the capital: Ningyuan War and Ningjin War. Basically, Yuan Chonghuan has been fighting to strengthen the city walls. No matter how much he scolds, he has to go out of town to fight. If he tries to defend the capital with artillery, he will have to fight on the battlefield, which will disturb the people. Plus Huang taiji will bypass Mongolia by surprise, so it is inevitable. ...