It appears the woman in blue is blind. She is singing on the side of the street and patiently waits for passersby to give her a coin or two.
Then came an unexpected person who brought out his own plastic container glass from his pocket, and dropped a few coins on the woman's container.
This man is inspiring confidence that we cannot really judge the book by its cover. What he did is something extraordinary. If he who doesn't have still gives, why can't the others who have a lot do the same?