“That fearless neighbor is out walking his dog again,” he says in one. But he exudes fury when discussing Chinese nationalists who see Mr. Putin as a hero, justified in attacking Ukraine.

“Since last night, the air raid alarms have sounded at least three times, and the church bells rang out more than that,” he said near the start of one recent broadcast. He then turned his camera on himself.

“Why are you afraid of people finding out the truth?” he said. “Why can only those voices cheering on this bloody path be spread?” he continued. “Some people tell me that nowadays it’s a society where the strong devour the weak, where power comes from the barrel of a gun. Who said that? Where is the sense in that?”

In a phone interview, Mr. Wang, 36, said that he had been inundated with messages from Chinese viewers.