The sound of singing refers to the sound of Li Bai’s friend Wang Lun singing while stamping his feet. This is an ancient custom. "To Wang Lun" is a farewell poem written by the great poet Li Bai of the Tang Dynasty to his local friend Wang Lun when he was traveling in Jing County (now Wannan, Anhui). The poem depicts the scene when Wang Lun came to see Li Bai off by singing songs when Li Bai was about to leave in a boat. It expressed Wang Lun's simple and sincere feelings for Li Bai very simply and naturally. "The water in Peach Blossom Pond is a thousand feet deep, not as deep as Wang Lun's love for me." Li Bai picked up two sentences at hand. He first used "a thousand feet deep" to praise the depth of the water in Peach Blossom Pond. Then he changed the word "less than" and used a comparative technique to compare. The invisible friendship turned into a tangible thousand-foot pond, vividly expressing Wang Lun's sincere and deep friendship for Li Bai. The language of the whole poem is fresh and natural, and the imagination is rich and unique. Although it has only four sentences and twenty-eight characters, it is very popular. It is one of the most widely circulated masterpieces among Li Bai's poems.

"A Gift to Wang Lun" by Li Bai of the Tang Dynasty

Li Bai was about to travel in a boat when he suddenly heard singing on the shore.

The water in Peach Blossom Pond is a thousand feet deep, not as deep as Wang Lun’s love for me.