13和值有多少组号码简介：I think that the Great Wall is too long and there must be a barrier outside the Great Wall. If there is no barrier and we just defend these city bricks, no matter how tight we are, flaws will be exposed over time.
I think that the Great Wall is too long and there must be a barrier outside the Great Wall. If there is no barrier and we just defend these city bricks, no matter how tight we are, flaws will be exposed over time.
