I Have Been Immortal Since Pre-Qin Dynasty

This is a story that begins when Ying Zheng returns to Qin. He walked through the bright moon of the Qin Dynasty, the border gate of the Han Dynasty, the character of the Wei and Jin Dynasties, and the mist of the Sui and Tang Dynasties. As the only Qi practitioner in the world, he has walked alone for thousands of years. In order to maintain a ray of true energy, he was forced to get involved in the general trend of the world; in order to seek a chance of survival, he had to get involved in the rise and fall of dynasties. Sitting alone in the clouds, watching the king's flag change; walking in the world, experiencing all kinds of things in the world. The waves have wiped out all the heroes, but the green hills remain as they were yesterday. I am a qi refiner in the world of mortals. I am in the human world and my heart is dedicated to immortality.