C411 Family Conspiracy
Second Lady...
The Second Madam that Chu Heng was referring to was Gu Yanhao's mother. Gu Yanhao's father was Gu Chenming's second uncle, and his father was Gu Chenming's father's biological younger brother.
The father's name was Gu Wangjin, and Gu Chenming's second uncle's name was Gu Wangyuan, Gu Wangjin's wife was Bai Yue, and Gu Wangyuan's wife was Qin Xiaoling