Vol. 4The Yin Yang Double Fish
Yu Sui survived the Night Walk, sealed the Yin Yang Double Fish, and returned to Qingyang as her relationships with Mei Chengyu and her family came into focus. The volume ended with Gongsun Qi going to help Shi Yuezhen while Lady Su ordered the Mute Woman to kill Qingkui.
- Princess Shangyang and Wei Jianing invited Yu Sui to the Golden Pearl Banquet, and Yu Sui won the School of Names’ Golden Key before heading toward Nether Lake with Gu Gan.
- Yu Sui traded for and recovered the Golden Key, while Mei Chengyu broke the True Spirit Chain and uncovered memories linking his future self to the Ghost Dao Sage.
- Yu Sui subdued the Yin-Yang Fish at Nether Lake and later woke Mei Chengyu from the Butterfly Dream, where he recovered his memories and vowed to stay with her.
- Xue Mushi survived the Myriad Phenomena Heavenly Thunder, while Gongsun Qi learned that Chang Gen had taken his sister’s child, Mei Chengyu.
- Mei Chengyu recovered his memories as Donglan Li and confronted Sage Chang Gen over Gongsun Xi’s death, while Yu Sui reached the Ninth Realm and tracked Gongsun Qi to Mechanism Island.
- Yu Sui withdrew from the Night Walk Trial after helping Sheng Zui and Gu Gan defeat Qin Yidong, and asked Zou Qian about the Taoist Saint Hall.
- Yu Sui sealed the Yin Yang Double Fish beneath the sea and returned to Qingyang, where she told Nangong Ming that she knew about the Primordial Soil and defended her love for Mei Chengyu.
- Yu Sui asked Gongsun Qi to rescue Shi Yuezhen as the Golden Armored Army searched for him, while Lady Su ordered the Mute Woman to kill Qingkui.