The "Old Book of Tang" records that "Prince Yin was born in Bishamon with a small character. He had a simple qualification, no regular inspections, a desolate appearance, a drinker, and a few shots. He was a scholar and a hero, close to villains, and sparse flesh and blood." Let's go back to the Tang Dynasty thousands of years ago to solve the shocking mystery. The merits and demerits of right and wrong will be commented by future generations, not just the words of one historian.