Si Wenying traveled to the world of The Classic of Mountains and Seas and became the younger brother of Dayu. He was made a civil servant by Emperor Yu because of his military report. From then on, he followed Dayu to travel around the world of mountains and seas, and recorded the strange beasts of mountains and seas in the Classic of Mountains and Seas.
Later, he followed Dayu to cast the Nine Cauldrons, drive away the strange beasts from the mountains and seas, and cut off the path to immortality...
