Is uncle with a high fever a bad person?

The uncle who "burns" the peak is not an out-and-out bad guy. Zhou Wei had no subjective motive to do evil, but he was deceived by Yue-e Zhao and angered by Xie Ning. He mistakenly thought Gao killed his father. In order to get back at Gao, he changed the DNA sample, which led to Gao.

Because of the autopsy case of 1995, Gao was depressed for half his life, Liu Zhijian and Gao Jianshe were killed, Gao Feng was almost killed, and Zhou Haoyu was murdered. It was Zhao Yuee who caused all this, and Gao Feng's uncle Zhou Wei was an accessory.

Zhou Wei didn't mean to do bad things. He was deceived by Zhao Yuee, thinking that his father Zhou was killed by Gao, so he listened to Zhao Yuee's arrangement and took the DNA sample of the autopsy case.

Zhao Yuee is the mastermind of the whole incident. She asked Xu Da and Guangyi Xu to replace the charred bodies with Xu Jialu's, and then caused a power outage during the test. Zhou Wei used this time to change the test samples, thus obtaining the test results that prove that the charred body belongs to Xu Jiafu.