This is just a possibility. All these Wang Tiechui grandfathers had to wait until they were dying to find out that they had lost. Some videos show that Wang Tiechui is watching people at this level play chess with relish. So, those grandfathers are novices, and Wang Tiechui is at this level.
Of course, if these chess games still have postures but don't explain them, they will not only have poor chess skills (good chess skills will make them closer to the master's games), but also have bad personalities. Those who say that uncle refuses to cooperate with posing, haven't you ever seen uncle and aunt go to class for more than ten yuan of eggs?
Finally, I would like to add that every time I play chess, the chessboard made with chess pieces is basically not an expert.