Mo Yi

The Duskwater city lord. Formerly betrothed to the Skyriver city lord (dead).

Abilities: Brightstar Snowrend: the most lethal of the Seven Stars Formations of the ancient world. Its blizzard of sword qi can effortlessly slaughter countless corpse flies. (Chapter 56)

Arc 2: Myriad Formation Peak
Mo Yi was being forced by the prefect in Duskwater City to marry the Skyriver City Lord. When Lu Yun learned of her situation he made Li Youcai marry a male pig as well. When they were inside the tomb, the Skyriver City Lord was killed because of the illusion of bronze outer coffin and his greed.

Sacred Land of Immortal Dao
It was revealed that Mo Yi's true cultivation level was in the Dao Immortal Realm and she was able to use her full power when she sacrificed a heavenly mandate to the Human Demon like Chen Xiao and Qing Buyi.

Mo Yi might not be from the World of Immortals because her senior sister asked her why she chose this dying world out of all the worlds in the multiverse to cultivate in.