阶梯倍投法简介：When the police officer Cheng brought Liu Lei out, he grinned with Su Can. When he saw Cheng Keshu was there, and Li Yun with red eyes, he said carelessly: Haha, I'm like this Nothing happened?
When the police officer Cheng brought Liu Lei out, he grinned with Su Can. When he saw Cheng Keshu was there, and Li Yun with red eyes, he said carelessly: Haha, I'm like this Nothing happened?
