The name of this article wasn't revealed in the novel and instead was given by editors of the wiki as substitute for lack thereof.
To retaliate against the Heavenly God Sect, the Cleansing Incense Ancient Sect threw away caution; it emptied the treasure vault and used pretty much all of the Sect's Emperor's Possessions, Life Treasures, Physique Pastes, Fate Pills and Longevity Medicines.
Even so, the Cleansing Incense Ancient Sect lost disastrously. Their Ancient Kingdom was destroyed, they lost control of their former territory and receded to their ancestral ground. Around 80-90% members of the Sect died in the battle including most of their talented disciples. The Sect also lost most of their powerful techniques, including almost all Immortal Emperor Merit Laws, as well as their last Immortal Emperor Life Treasure.
A few powerful experts survived the war, but they were gravely wounded. After they came back to the Sect, they immediately went into isolated cultivation, leaving the Sect without capable experts to protect it and teach new generations.