What is the technique used in the last two sentences of Chen Watch the Rain?

"The house leaks when it rains all night, and there is nothing to do, but there is no leader, and it is fun" ("Watching the rain") technique: borrowing and comparing. Appreciation: It shows gratitude to Mr. Chen. The profound national disaster and ill-fated life situation made Chen's patriotic enthusiasm gush out. This enthusiasm and his talent are condensed together to form such a heroic poem.