Why didn't Master Xianyun save mistress?

The man didn't save the woman for his brother. Childe of Idle Clouds is a novel written by Qing. The plot is in the design of the leader. With the subordinate of Huangfuling, the woman who lived for ten years, she chose to save her brother in the palace where she moved her heart, and the woman was the one who was abandoned. The full text tells the love story of Huangfuyun and Gongsunyun.