jnd大白算法在线测试简介：Regardless of the gong or the bell, it is the most urgent situation when the enemy attacks. The Qing soldiers in the city, no matter where they are, must immediately gather to defend the four gates.
Regardless of the gong or the bell, it is the most urgent situation when the enemy attacks. The Qing soldiers in the city, no matter where they are, must immediately gather to defend the four gates.
