Wan Ru means: His face looks like someone. Wan Ru comes from a poem "Zheng Youman Grass, National Style" in The Book of Songs, the first collection of poems in ancient China. This is a love song, written on a dewy morning. A pair of young men and women met unexpectedly on the road in the field and fell in love with each other. Their joy was hard to suppress.
The whole poem consists of two chapters, six sentences in each chapter and two sentences in one layer, which are divided into three layers: scenery, characters and emotions, representing typical environment, typical characters and typical feelings. As a hymn to the holy and free love of Chinese ancestors, this poem is original, simple and frank, which is different from the poems that show the encounter between men and women in later generations, whether it is poetic imagination or true portrayal.