Who is the author of the poem June 1st? From where?

There are many poems and songs about June 1st. I don't know which one you want. Can you give me a hint? But I know the most popular song is the following one:

Children's Day Songs

Yuan Shuipai's Yu Ci Ke Qu

Lyrics (incomplete):

June is fragrant with flowers and sunny in June. On Children's Day, songs are sung everywhere. Sing about our happiness and the prosperity of our motherland. We grow up freely in this glorious land. We should learn our skills well and make our bodies strong. Strive to realize Mao Zedong's great ideal! June is fragrant with flowers and sunny in June. On Children's Day, songs are sung everywhere.