Great Ming: From the Start, I Sign In for the Rejuvenation Powder and Save Zhu Biao

Zhu Yingying is reborn as the prematurely deceased eldest imperial grandson and, bound to a System, is trapped in a valley, relying on sign-ins to obtain Rejuvenation Powder. When Zhu Yuanzhang seeks help for his critically ill heir, Zhu Yingying sends the medicine from afar. Zhu Biao swallows the pill and lives on, while the Hongwu Emperor vows to track down the “trickster” behind it all.