Pen 1: folded horizontally,
Pen 2: Cross folding hook,
The third stroke: vertical,
The fourth pen: point.
The word composition of books: cursive script, writing, storytelling, book collection, calligraphy and painting, schoolbag, reading, study room, reading, endorsement, history books, desks, series, letters, eyebrows, regular script, spine, imperial edict, study room, bookcase, brocade book, book stand, bookstore, flying book, etc.
Idioms of books: countless books, loud voices, hard work, extensive reading, Pu Die's writing, sending books to Hongqiao, reading with the moon, sending books to Yuhong, holding books to the south, famous books and jute purple books.