115计划简介：Behind the main hall, there is a lake. The water in it is black. There are two corridors on both sides of the lake. On the opposite side is a huge black screen. The situation at the end of the corridor cannot be seen clearly.
Behind the main hall, there is a lake. The water in it is black. There are two corridors on both sides of the lake. On the opposite side is a huge black screen. The situation at the end of the corridor cannot be seen clearly.
