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The War God Temple is a very ancient existence that has survived since the Desolate Era. It has been commended as one of the sanctuaries of the Human Race during the wild Desolate Era. However despite being so powerful it has never actually been able to produce an Immortal Emperor. The closest chance they had was Immortal Emperor Bing Yu however they chose to ignore her which lead her to leave the temple.
They have many powerful Old Ancestors including War God Mu who had the chance to live a second life after Dark Crow helped him. Another is Old Xian from the Hidden Immortal Hall. Finally the last is Mu Chen who along with Demon King Lun Ri comes to assist the Cleansing Incense Ancient Sect. The Temple is an extremely powerful Sect which even a Two Emperor sect like the Azure Mysterious Ancient Kingdom wouldn't stir up.