Grass and Tree refers to a children's picture book named Grass and Tree, written by China writer Wang Xiaoming, which tells the story of friendship and growth between a grass and a tree.
Picture books, foreign words, namely picture books, are taken from the Chinese writing of "ぇほん" in Japanese picture books. As the name implies, it is a picture book, which refers to a book with painting as the main part and a small amount of words.