Son-in-law: Me, the Wife-Protecting Maniac.

Summary

Ye Qingrou explains to Yang Chen the importance of balancing heavy and light swords in combat. While the heavy sword has its advantages, she advises him to also train with a light sword for speed advantages against different opponents. Yang Chen, initially confused about studying medicine, realizes that his alchemy skills could translate well into medical knowledge. He discovers the Hearing Wind Sword in the World Ring, which is lightweight and perfect for stealth. Yang Chen begins training with it, finding his speed dramatically increases. He also finds a unique killing technique called "Ruo Hong," which emphasizes speed, making it a perfect match for the Hearing Wind Sword.

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