倍投进一退二方法简介：Su Can took him to a two-story rooftop building. The walls were covered with black shoe prints. The white wall paint peeled off layer by layer due to disrepair, and the ground was covered with a layer of dust.
Su Can took him to a two-story rooftop building. The walls were covered with black shoe prints. The white wall paint peeled off layer by layer due to disrepair, and the ground was covered with a layer of dust.
