Introduction to qi: Decades ago, a feudal clan that had been hiding in Yunnan for hundreds of years was destroyed in a movement to destroy the four olds. Decades later, those who participated in that movement and their descendants encountered strange things one after another. Archaeologists, college professors, overseas students, wealthy sons, and small antique shop owners have all been involved in it. All appearances are illusory. If you see appearances and non-appearances, you will see the Tathagata. —— 'Diamond Sutra'