In the third year of Zaiqian's reign, across Jiangnan Road in Yizhou City of Yu Country, Li Ang awakens to discover fragmented memories of a modern doctor who shared his name. Armed with contemporary medical knowledge, he stands at the threshold of an ancient world—a place where his expertise could reshape destinies. With forty-one strings of coins dwindling fast, Li Ang faces an impossible choice. Half a year remains before poverty consumes what little he has left. Chai Cuiqiao, his devoted maid, trembles as she offers her private savings, unwilling to watch him suffer. But Li Ang refuses to survive on another's sacrifice. Instead, he envisions something greater: reopening a clinic in this forgotten era. Can the wisdom of tomorrow heal the wounds of yesterday? In a land desperate for answers, one man's knowledge becomes an instrument of change—and perhaps, the key to understanding his own reincarnation.