There are also (370 years ago -300 years ago) and Dan (463 years ago -385 years ago), who were born in Luoyang, the capital of the Eastern Zhou Dynasty, and served as prime ministers of Wei in the early days. During this period, he showed his talent in water control on the girder of Weidu, which eased the flood of the Yellow River. Later, due to Wei's political corruption, he traveled to Zhongshan and Qi, abandoned politics and went into business. Bai Gui chose the bulk trade of agricultural products, rural handicraft raw materials and products as its main business direction, showing its far-sighted vision and ability to seize opportunities, and summed up a set of business ideas.