The Son-in-Law Becomes a Marquis

Lin Yanzhi (modern identity) / Chen Yanzhi (Eastern Jin identity), 22 years old, a third-year clinical medicine student at a top modern medical university, skilled in internal and external medicine, emergency care, and basic pharmacology. He is calm, restrained, highly observant, with principles and resilience. He dies in a lab accident (reagent explosion) and transmigrates to the Eastern Jin dynasty. Before transmigration, he came from an ordinary family, worked hard to get into medical school, and understood the hardships of the lower class. After transmigration, he becomes a poor son-in-law from a humble family in the Eastern Jin. The original body was a cowardly, uneducated, and unskilled poor boy, unable to support his family and timid, thus mistreated by his mother-in-law's family. After accidentally hitting his head (actually transmigrating), his personality changes drastically, and he begins his path of reversal.