Underworld jellyfish

Worldly Wave Trace needs tens of thousands of underworld jellyfish, together with thousands of deepsea lightning eels. ^{ch. 672}

Fang Yuan names tens of thousands of underworld jellyfish among the specific foods he needs for his Immortal Gu and calls them, with deepsea lightning eels, specialties of eastern sea. He puts them on the list Tai Bai Yun Sheng carries toward Hai Shi blessed land. ^{ch. 673}

Worldly Wave Trace is the first of Fang Yuan’s Immortal Gu to cry of hunger, and underworld jellyfish are one of the two foods it needs. Treasure yellow heaven yields few sellers, but Tai Bai Yun Sheng reports that someone is already selling underworld jellyfishes in Hai Shi blessed land. ^{ch. 679}

Tai Bai Yun Sheng buys sufficient underworld jellyfish in Hai Shi blessed land. Fang Yuan inspects the delivery with surprise before using those jellyfish, with the eels, to feed worldly wave trace Immortal Gu. ^{ch. 683}

Underworld jellyfish are needed in huge quantity for Worldly Wave Trace, yet can be bought easily with immortal essence stones, unlike deepsea lightning eels. ^{ch. 709}

A water path Gu Immortal whose blessed land is a sea can raise underworld jellyfish, deepsea lightning eels, and similar stock inside it after obtaining Worldly Wave Trace, and draw those materials to keep the Immortal Gu fed. ^{ch. 710}