Pindao Came from the Eastern Tang Dynasty

During the Zhenguan period, Xuantong, a Taoist priest in Jingzhao Prefecture, invited himself to go to the Western Regions because of an old case in the East Palace. A copper bell was given to him by the emperor hanging on his waist, and a Chang'an pickle altar and calculation chips were hidden in his luggage. On the surface, he was an immortal holding a fly whisk and preaching, but privately he loved to read Bianwen in Hu Shang's account. From the Gaochang Kingdom solving the mystery of "human sacrifice", to the Tubo tribe using the "Book of Rites" to mediate blood feuds, from using arithmetic in the food market to expose counterfeit coins, to sending Japanese envoys to the Tang Dynasty to teach the "Essential Art of Elevating the People", every time he went to a country, he first solved cases to save lives, and then used common things to spread rituals - he said "harmony without difference" when exchanging pickles for spices in a Persian temple, and demonstrated "Yin and Yang" with arithmetic in Tianzhu temples. During the journey of thousands of miles westward, the volume of the Tao Te Ching, which was always being repaired, was gradually filled with leaf vein bookmarks of various ethnic groups, and the "Chang'an" he silently recited when planning his journey eventually became a common language across mountains and seas.