四个数字有多少种组合有两个重复简介：In terms of defense, the fort is actually the most important. Without the roar of the fort, it is absolutely impossible to stop the landing enemy by relying only on the guards of obstacles and forts.
In terms of defense, the fort is actually the most important. Without the roar of the fort, it is absolutely impossible to stop the landing enemy by relying only on the guards of obstacles and forts.
