计划和差公式简介：A black line also appeared on He Xin's face, but he quickly smiled and talked to Su Can for a few words. They were very harmonious. Finally, he said that if they were free, they could go out for a walk together.
A black line also appeared on He Xin's face, but he quickly smiled and talked to Su Can for a few words. They were very harmonious. Finally, he said that if they were free, they could go out for a walk together.
