Introduction to the Museum of Weights and Measures: The Qujia Courtyard has used this architectural wonder to open up various forms of museums; the Shanxi Merchant Culture Museum is the first museum in the country to display Shanxi merchant culture; the Shanxi Merchant Escort Bureau Museum, special topic It displays the evolution and development of the Shanxi Merchant Escort Bureau; the Weights and Measures Museum displays nearly a thousand various weighing instruments made of pottery, bone, copper, iron, jade, porcelain, stone, wood, bamboo and other materials from ancient times to the Republic of China: rulers, Measurement, axe, sheng, bucket, power, scale, scale, 戥子, etc. Classifying instruments and describing changes through history reflects the integrity of Shanxi merchants; the Abacus Museum displays ancient primitive models of abacus and abacus from various periods, including ancient knotted rope records, Spring and Autumn calculations, and ancient arithmetic books. Fourteen arithmetic calculation tools recorded in "Shu Shu Ji Yi". Among them, the longest abacus is 6 meters and the smallest is only 1 centimeter. There are also ancient books that comprehensively introduce the abacus algorithm and arithmetic.