The Heavenly Fiend Sect is one of Six Devil Dao Sects.
Spirit Well Tree
After the Six Devil Dao Sects and the Righteous Dao Alliance had discovered a withered ancient Profound Goddess's Palm near the Moulan Plains, they made a plan to acquire the Spirit Well Tree to restore it. Disciples from Thousand Illusions Sect, Heavenly Fiend Sect and Righteous Dao's Overwhelming Pavilion were send to infiltrate the three sects in the Dreamcloud Mountains to acquire the Spirit Well Tree. Even Truelord Heavenfiend himself took action to fight Nascent Soul cuiltivator. Later, when they used the Wine Nectar to water the Profound Goddess' Palm, the tree remained in its withered state without change.
After about 100 years, Moulan tribes launched an invasion. The final battle involved hundreds of thousands of cultivators. Long Han served as the commander of the Heavenly South Army and Divine Sage Zhu commanded the army of spell warrior. Devil Concord fought Yin Sifting Sect Master Fang. Heavenly Fiend Sect has refined the Death Return Pill for those fighting in the wagered battles. Before the culmination, Moulan received news about the attack of Soaring Tribes. Both sides stopped fighting and later agreed to unite against the common enemy.