C321

After being unconscious for an unknown period of time, Liu Chengfeng slowly woke up. When he opened his eyes and looked around, he found that he was still inside the tall building.

"What are you doing?" Liu Chengfeng muttered as he subconsciously rubbed his shoulders, feeling a little sore.

"Hmm?" Liu Chengfeng looked down at his hands, and discovered the problem with his hands