红马计划软件手机版简介：Xiao Xiaobai, who had gone up to the fourth floor, was about to enter the classroom through the back door near the stairs, but his keen ears heard a crisp and slightly familiar footsteps coming from the front door of the classroom.
Xiao Xiaobai, who had gone up to the fourth floor, was about to enter the classroom through the back door near the stairs, but his keen ears heard a crisp and slightly familiar footsteps coming from the front door of the classroom.
