This sentence comes from Lao She's Prairie.
Lao She (1February 3, 899-1August 24, 966), formerly known as Shu Qingchun, used to have other pen names, such as Qingqing, Hongse and Feizi.
Extended data:
Grassland is an essay written by Lao She, a modern poet. The text mainly talks about grassland scenery map, welcome map and Mongolian-Chinese get-together map. Finally, the author quoted a sentence, why can't Mongolians and China people love each other? Expressed the author's love for grassland and deep friendship for Mongolian and Han nationalities.
This work was selected into the first volume of the fourth-grade Chinese book published by Beijing Normal University, the second volume of the fifth-grade Chinese book published by People's Education, the second volume of the fifth-grade Chinese book published by Hebei Education and the first volume of the sixth-grade Chinese book published by Jiangsu Education. The author Lao She was originally named Shu Qingchun. The author expressed his love for the grassland and the deep friendship between Mongolia and Han.
Lao She, a native of Beijing Manchu Zhenghongqi. China is a modern novelist, a famous writer, an outstanding language master and a people's artist. He is the first writer in New China to win the title of "People's Artist".
References:
Baidu encyclopedia-grassland