Hanfu is right-handed. On the contrary, the clothes of some ethnic minorities in ancient China were covered to the left, which is different from the right-handed people in the Central Plains and is called left-handed. "Zuozhou" is used to refer to being ruled by a foreign country. In addition, Zuo Zhou is also used to refer to the deceased. In the murals buried with the dead and the portraits of ancestors, the left periphery is used to show the difference between Yin and Yang. According to legend, the ancient Qiang people who lived in the ancient Qinghai-Tibet Plateau migrated to the southeast and entered the Minshan area and the Chengdu Plain. Later generations called these people who lived in Minshan Canyon Shushan people. Later, a woman in Shushan married the Yellow Emperor as a princess and gave birth to her son Can Cong. Can Cong established the ancient Shu kingdom in Sichuan Plain, which was handed down from generation to generation and established one dynasty after another. And Sanxingdui culture is located in the southwest, not in the Central Plains, that is, the so-called foreigners (ancient Qiang people) at that time. Dali people are the most authoritative leaders of Sanxingdui ancient Shu State, who are gods, witches and kings, and are the supreme symbols of theocracy and kingship. The plaid ribbon ornaments worn by portraits should have the nature of "French ribbon" and represent authority. Several groups of dragon patterns on his clothes seem to have the meaning of encouraging and infiltrating with the gods. The clothes he wears are probably the vestments of wizards.