They figured out that Wei Ying’s parents had died, and Wei Ying left alone, when Jiang Cheng’s fingers started scabbing over. After all, that’d been the agreement: Jiang Fengmian would consent to his wife’s proposal to engage his eldest daughter to the Jin sect’s heir, and in return she would agree to allow him to bind his best friend’s son to his own the way he and Wei Changzhe had once been bound, before the latter dissolved it in order to marry. A soul binding contract, allowing the wounds incurred by one to be shared with the other – a life-saving panacea, halving the severity of the injury by splitting it among two people’s bodies.