Ge Hong was a very famous doctor in the Eastern Jin Dynasty in ancient China and a pioneer and disseminator of preventive medicine. He wrote a famous book, The Elbow, which is the first medical book to record the symptoms, diagnosis and treatment of some infectious diseases, such as smallpox and scrub typhus. Ge Hong is not only skilled in medicine, but also experienced in alchemy. Andrew, his master, knew that there was going to be chaos in the world, so he took books and disciples to Huoshan to live in seclusion, and only Ge Hong stayed in Danyang.
Later, Ge Hong joined the army as a general, and was named General Fu Bo because of his achievements in the battle between Shi Bing and the peasant rebels. After several wars, Han Ji asked him to join the army. Ge Hong agreed with Han Ji because he thought it was an opportunity to avoid chaos. He didn't want Han Ji to be killed by his enemy Li Guo, so he was forced to stay in Guangzhou for several years. He feels that things are impermanent and prosperity is fleeting. So he treated teacher Bao Jing with courtesy and continued to learn Tao. Because she was highly valued by Bao Jing, she married her daughter Bao Gu.
In the second year of Jianxing, Ge Hong returned to his hometown to live in seclusion in the mountains and wrote Bao Puzi. Two years later, the Eastern Jin Dynasty was established. Because he remembered Ge Hong's contribution, he specially named Ge Hong as Shanhaiguan Hou. Many people wanted Ge Hong to be an official, but Ge Hong refused. Later, forced by life, he came out to join the army. Ge Hong heard that cinnabar is produced in Jiao Jiao. With the approval of the emperor, he went south to his post and was recommended by Deng Yue. Live in seclusion in Luofu Mountain, practice alchemy, write books and give lectures.