Fuzhai Guanxi

Younger, Loyal Dog Idol x Cold and Collected President

Han Dongqing and Hong Yue are non-biologically-related uncle and nephew. Hong Yue's parents cheated Han Dongqing out of a large sum of money, devastating him both physically and mentally and turning his world upside down. Hong Yue ends up burdened with the debts left by his parents, and vows to make up for his uncle's ruined life with his own.

(Source: Kuaikan, translated)