There is a Kannonji in Hangkou, Guangzhou. Although the temple covers an area of less than 3 square meters, it is filled with incense and an endless stream of believers. According to legend, this is related to a plague 300 years ago. In those days, countless people died of the plague. Just when the doctors were at a loss, an old woman came, claiming to be the incarnation of Guanyin Bodhisattva, and taught people to eat lettuce bags to prevent the plague and keep safe.