Lin Huang knew that his actions had been exposed as he hung up on Guan Zhong's call. However, he no longer cared about that.
Guan Zhong and Qian Rui took the initiative to call him to test him, but that already proved that they could not find any reliable evidence. They were not sure if he was the one who killed Zhuge Feifan.
However, him rejecting to carry out the video playback for them was equivalent to admitting he was the murderer.
Nevertheless, he could only decline the request.
If he agreed to do that, Guan Zhong would recognize the bruised corpse right away when they saw the playback. He would be giving the Union Government a piece of solid evidence.
Although Guan Zhong and Qian Rui were sure that it was him who did it, they had no solid evidence to go after him.