2. Silkworms in spring will weave until they die, and candles will drain the wick every night. Untitled Li Shangyin
3, sneak into the night with the wind, moisten things silently. Du Fu's Delighting in Rain on a Spring Night
4. Stick to the height and drill harder.
5, peaches and plums don't talk, and they call themselves.
6. Once a teacher, always a father.