During the Southern Tang Dynasty, Emperor Li Yu was known by the title 'Master of Embracing Red and Caressing Green.' One day, while visiting a pleasure house incognito, he was surprised to find a monk already present, making Li Yu feel like an uninvited guest.

The monk displayed extraordinary talent in drinking games, singing, and playing musical instruments. Li Yu was deeply impressed, and they conversed congenially.

In his intoxication, Li Yu then penned a famous couplet: 'A master of delicate sips and soft songs, of embracing red and caressing green, the abbot of Mandarin Duck Temple, propagating the dharma of romance.'