Bing Xin's poems about Tomb-Sweeping Day should have a source.

It is a modern poem "Paper Boat".

Paper Boat is a modern poem written by Bing Xin, a modern poet, at 1923. This poem is written in the tone of a childlike child, and the overall tone is cheerful. Through the childlike action of "folding paper boats", the paper boat is endowed with special significance, and the author's love and yearning for his mother are entrusted, thus expressing his deep attachment to his mother and motherland.

Bing Xin (190010.05-1999.02.28), female, formerly known as Xie Wanying, is a native of Changle District, Fuzhou City, Fujian Province, and a member of China Association for Promoting Democracy. China poet, modern writer, translator, children's literature writer, social activist and essayist. The pen name Bing Xin is taken from There is a Bing Xin in the Jade Pot. 1February 28th, 999 At 2 1 p.m., Bing Xin died in Beijing Hospital at the age of 99, and was known as the "old man of the century".