Synopsis of "Dangu Yuyin: Emperor Zun, Madam went to the underworld to get goods again"
Su Qingyuan, a useless disciple of Xuan Yue Sect, is actually the Yin Dan God who was reborn with the memory of Xuan Sect. When she was in danger at the mass grave, she used her ancestral old elixir furnace to refine a soul-soothing elixir to ward off the evil ghosts. She accidentally attracted Bai Wuchang from the underworld, and was given a pass token that allowed her to freely enter and leave the underworld. From then on, "going to the underworld to get goods" became her daily routine, and she had readily available materials such as Forgotten Sand and Hell Fire Lotus.
This unexpected encounter quickly alerted Emperor Chenyuan of the upper realm. This strong man who has been searching for her for ten thousand years transformed into a madman who protects his wife. He accompanied her into the Xuanying Cave to find the lost Yin Dan Divine Cauldron, and helped her win the Nether Pill recipe by defeating the others in the underworld. During the process, the ghost alchemist Xie Lin, the reincarnation of Dantong in his previous life, appeared to protect Su Qingyuan, revealing Su Qingyuan's past as the "Pulse Keeper of the Three Realms".
With the changes in the remaining forces of the Xuanying Sect, the crisis of the Fallen Angel's seal being loosened has surfaced. Su Qingyuan used the Yin Dan Divine Cauldron as the basis and integrated the spiritual materials of the three realms to refine the "Three Boundary Heng Dan", while Emperor Chenyuan led the Three Realms Alliance to prepare for the war. When the core of the Fallen Angel awakens, she uses her own Yin veins as a guide to redraw the seal, and he uses the Emperor's origin as a shield to protect each other. The two spiritual powers merge and form the combined force of Yin and Yang to finally suppress the Fallen Angel and protect the peace of the three realms.
After that, Su Qingyuan, the empress of Chenxiao Palace, often went to and from the underworld with her cute pet Mo Lin to "replenish supplies", and Emperor Chenyuan would always follow closely behind to grab the rarest Yin materials for her, creating a story in the Three Realms that "the Dan God controls the Yin Fire, and the Emperor stands by his side".