Righteous Dao Alliance is a coalition of Righteous Dao sects.
There is a late Nascent Soul cultivator in the Righteous Dao Alliance, the Six Devil Dao Sects and the Nine Nations Union, each only a step away from entering Deity Transformation stage. This is how each of the three superpowers remain on equal footing. As for Heavenly Dao Alliance, they have two mid Nascent Soul-stage Dao Companions that are proficient in cooperative techniques.
As Six Devil Dao Sects conquered State of Che Ji and Jian and were preparing to invade the State of Yue, Righteous Dao Alliance seized a neighbouring mid-class country themselves. These two great powers started their large-scale expansion.
As the Nine Nations Union had lossess against Moulan Race, they requested reinforcements from Righteous Dao Alliance, Six Devil Dao Sects and Heavenly Dao Alliance. The three superpowers had to agree to not let Moulan warriors enter the Heavenly South Region and wreck havock. This pact led to a peace in the region for a hundred of years.
After the Six Devil Dao Sects and the Righteous Dao Alliance had discovered a withered ancient Profound Goddess's Palm near the Moulan RacePlains, they made a plan to acquire the Spirit Well Tree to restore it. Disciples from Thousand Illusions Sect, Heavenly Fiend Sect and the Overwhelming Pavilion were send to infiltrate the three sects in the Dreamcloud Mountains to acquire the Spirit Well Tree. After 100 years, 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. After loss of Soaring Heavens City, reinforcements from the Righteous Dao Alliance, Six Devil Dao Sects and the Heavenly Dao Alliance had arrived and stopped further progress at the border between States of Yu and Beiliang.
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. Master Sunreach fought one of other Divine Sages. Many disciples from sects from Six Devil Dao Sects, Nine Nations Union or Heavenly Dao Alliance participated. Righteous Dao Alliance sects prepared their ancient treasures. They were to deal with Devil Dao Yin Sifting Sect cultivators. Before the culmination, Moulan received news about the attack of Soaring Tribes. Both sides stopped fighting. With peace talks against the common enemy, Moulan got 2 countries near the border, and the Nine Nations Union was compensated with other territories.