1. Lou Shou Bei was written by Lou Sui, a calligrapher in the Northern Song Dynasty, and Cao Quanbei was written by Cao Quanbei, a calligrapher in the Ming Dynasty.
2. The Lou Shoubei is mainly based on regular script, with solemn style and full and steady strokes. Cao Quanbei is mainly a running script, with fast and powerful strokes and compact structure.