She and her twin sister Zhi-Xi transformed into human form during the Jade Pool festival of the Supreme Emperor.

Nine Fins descendant Yu Mo-Shan, from ancient times, was saved by Celestial Deity Bei-Ming who helped him attain human form through cultivation.

While writing the play, Yan-Dan noticed someone kept flipping the Divine turtle onto his back & was determined to find out who was the culprit.

Yan-Dan helped Celestial Deity Bei-Ming, who was always kind to her, solve many chess problems sent by Lord Ying-Yuan.

During the battle, most of the leaders were killed, but the war was won, at great loss, & peace was restored to the Heavenly Realm.

Bei-Ming had used his magical Artifact to save Yu Mo as a promise to the Nine Fin tribe who he was great friends with.

While helping the Divine turtle to go down to the mortal world, she, inadvertently, found out the cure for the flame poison.

She used half of her heart to cure Lord Ying-Yuan, because she couldn't bear to see him suffer in pain or die from the flame poison.

Yan-Dan became upset because she thought Lord Ying-Yuan forgot his promises to her to recognize her when he awoke & smell the lotus blossoms in the pond in front of the cottage.

Zhi-Xi is shocked by this outcome, she didn't expect Yan-Dan to be so severely punished & regretted helping Ying-Deng.

Yan-Dan thinks Lord Ying-Yuan despises her, but he works to save her and with help from Marshal Hou-Den, gets a decree of immunity & sets her up in Xuan-Xin Cliffs palace.

Her Immortal spirit is destroyed & she must cross over the Night Forgetting River to enter the mortal world.

When Lord Ying-Yuan returns to the Heavenly Realm, he presents himself to the Supreme Emperor for punishment of having a love relationship & survives it when most other deities would have perished.

He realizes it was done by Yan-Dan because of the scent of lotus blossoms & uses his Immortal powers to reinforce the pillar, then he faints away into a coma.

Li-Mu, who is now assistant to the Supreme Emperor, comes across a report sent by a Hell guard of people who haven't crossed the Night Forgetting River.

Using the sonic beetle, Curator Ying-Deng overhears what Li-Mu has told Lord Ying-Yuan and finds out Yan-Dan has not crossed the river & plots to have her killed.

He helps Yan-Dan, who is now partially blind & suffering from attempts to enter the mortal world by trying to cross the Night Forgetting River.

He arranges for her to fall through a hole he creates in the river to reach the mortal world, but is interrupted by the King of Hell, Ning Wang, who believes if he uses the four leaf lotus, it will cure his illness as was told to him by Curator Ying-Deng through use of the sonic beetle.

Lord Ying-Yuan is ambushed by a dark figure who he fights off only to realize it was to keep him from further questioning Ning Wang.

The Supreme Emperor grants his request & to cover up the investigation he announces Lord Ying-Yuan will be sent down to the mortal world for further penance.

In order to find Yan-Dan's reincarnation, Yu Mo-Shan (last descendant of the Nine Fin tribe) escapes to the mortal world with help from Zhao-Lan, Princess of the South Seas Dragon clan.

He searches for her for almost 900 years & can't find her, but knows she is still alive because of the sigil on his arm, given to him by Yan-Dan while he was still working on keeping his human form at Xuan-Xin Cliffs.

Yu Mo became a powerful ally for Yan-Dan when she starts her life after descending into the mortal world.

In order to help Yan-Dan realize her wish, Yu Mo takes her to travel around the world, to "do one good deed every day" & experience life.

Li-Mu tells him he used to be the sovereign lord & needs to repair his vest or his God Powers will destroy his body.

In order to repair his vest, he needs to find the 4 Divine artifacts: 7 Luminious jade, Li Chen, Chu Mo, & Earthstop.

While Yan-Dan was punishing an evil deed, she encountered detainment & persecution from Demon Slayer Tang Zhou.

This starts a journey in which Yan-Dan and Tang Zhou both fought evil using wits, spells, & creativity.

She helps Tang Zhou find the four Divine artifacts needed to repair his Celestial vest.