Chapter 523: Diagnosis**

Humphrey Han nodded, "Back when my mom was young, she sold fried dough sticks for over ten years. She was always around cooking fumes, and..." As she spoke, her expression changed noticeably, glancing towards their kitchen. Feng Qing glanced towards the kitchen, speaking gravely, "Because my wife sold fried dough sticks for many years, she developed a peculiar habit—she likes the smell of cooking fumes. All these years, when she's cooking at home, she never turns on the exhaust fan, at most just...