Introduction to Bi Zhang Hui Lan: The Thirteen Products of Shimen occupy an important position in the art of calligraphy. They give people the enjoyment of the beauty of calligraphy art and are the highest artistic crystallization of both calligraphy and engraving since the Han Dynasty. Among them, the works of the Han and Wei dynasties were famous as early as the Tang and Song dynasties, and were well-known throughout the country. They were even more highly praised by archaeologists and calligraphers of the past dynasties. Nowadays, the Thirteen Products of Shimen are important objects for the study of Han Dynasty and enjoy a high reputation in the circles of calligraphy and epigraphy at home and abroad.