飞艇浮力公式

简介：When Zhu Cixi crossed over, the Songjin War was already in its later stages. The nine-sided army led by Hong Chengchou was besieged in Songshan, and their defeat was certain. Although Chongzhen sent Shuntian Governor Yang Shengwu and Minister of War Fan Zhiwan to lead the army to Songshan to relieve the siege, but The two men had weak soldiers and generals. Facing the Manchu and Qing army, they both held back their troops and did not dare to attack.