The scene where two grandfathers are fascinated by chess.

Describe the scene where two grandfathers are fascinated by playing chess: two old people sit under a tree and play chess with their fans, attracting many people to watch. I saw two old people frowning. One, with his chin in his hand, seems to be racking his brains to think about countermeasures. The other clenched his fist tightly and seemed to be saving his strength to defeat his opponent. Suddenly, the old man's hand was released. He gently took a step under the chessboard and immediately posed as a winner, as if to say to his opponent, give up quickly.