Nan Gong Zhuangzhu is the deceased father of Nangong Xun and the owner of the Secluded Mountain Manor. He shared a life-and-death friendship with Jiu Yue's master. He possessed a noble heart dedicated to providing a home for wandering heroes. After Jiu Yue's master passed away, he rushed over upon hearing the news and together with Jiu Yue, handled the funeral arrangements. He extended an olive branch to Jiu Yue, inviting her to live at the manor, but she declined. His dedication to providing a home for wandering heroes contrasted with Jiu Yue's master who loved freedom and lived an unrestrained life. Nangong Xun mentioned that his father misses Jiu Yue so much.
