"Sì Yǔ Shī Lù" is an original YANHE song that was featured in the album The Stage 2. Its remastered version was uploaded in August 2015. The lyrics were taken from Bao Ji of the Tang Dynasty and is the prayer that YANHE chants. Cameos in the PV include: Luo Tianyi, Zhiyu Moke, Yuezheng Ling, and Yuezheng Longya.
In the PV, YANHE is a witch who prays for rain. She meets a guard (Longya) and they fall in love with each other. However, an evil tree monster, who is disguised as a human woman, finds out about their love and reports to the king. Longya is imprisoned for damaging the witch's purity by loving her and YANHE is forced to paint tattoos on him. In ancient times, tattoos were marks of a criminal and were considered to be punishment. On the day of Longya's execution, Ling arrives and reveals that the woman who turned him in is a tree monster. Ling slays the monster, blowing the monster's cover and revealing her true form when she dies. Longya is freed and he lives to be with YANHE in the end.