7个数复式三中二多少组

简介：The construction in the city has just begun. The first thing to be built is the residential area. After all, humans are used to living in houses. In this extremely dangerous border, houses cannot be built casually. They must have a certain degree of defense. Otherwise, they will be built casually. If a big war breaks out and the house collapses, it would be better not to build it!