Yin Yang Barefoot Doctor

My name is Gu Mingyuan, I was born with yin and yang eyes, and was regarded as a crow's mouth by the whole village. Only the barefoot doctor Dou Shizong accepted me as his disciple and taught me to catch ghosts and save people. He said that the copper coins around the necks of the village guards could not be touched, as they had been earned with their souls to ward off evil for the whole village. I didn't believe in evil until the copper coins were exchanged, the Yin soldiers came on the moon, and the master turned gray overnight. He left eight words before his death: A healer does not heal himself, and a healer does not heal himself. Later I realized that he spent his whole life saving me.