C169 Protective shortening

After Bai Xiaohei finished ordering the dishes, he sat down. He didn't speak and just leaned against the chair with his eyes closed, waiting, while the students of the fifth class in front of Bai Xiaohei were all very nervous and didn't dare to speak.

Just as everyone was waiting for their food, the sound of footsteps could be heard on the stairs, accompanied by a voice of conversation