What does "doing push-ups" popular on the Internet mean?

Push-ups are about a woman who suddenly fell into the river one day and died. Before her death, she was said to have had disputes and conflicts with a tyrannical princeling. Persuaded by friends, the man went to the bridge for the third time to do push-ups. Who knows what the woman was stimulated by, suddenly shouted for me to go, and then jumped into the river and died.

Push-ups, a popular online language, are generally expressed as "do push-ups" or "I'll do push-ups", which expresses the attitude of not caring about current events, not making comments, but only doing your own thing.