What wonderful puns have you seen?

In Empresses in the Palace, there is a story that Princess Duan Hua forcibly locked Cao Guiren's daughter in her own palace. Cao Guiren longed to be a woman, so she peeled a plate of lotus seeds for the emperor, and told the emperor that the heart of lotus seeds was the most bitter. She successfully made the emperor understand her Reiko Kobayakawa heart and allowed her to bring her daughter back to her palace to raise her.