The All-Eras Ancient Kingdom is an Imperial Lineage created by Immortal Emperor Yi Shi during the Emperors Era. It is considered to be a miracle of the Emperors Era in the Sacred Nether World, because two Immortal Emperors came out from the Kingdom with the gap of a single generation. Moreover its second Immortal Emperor, Er Shi, is believed to be Yi Shi's reincarnation.
In the Current Era the All-Eras Ancient Kingdom is very formidable power, only beneath almighty existences like the Myriad Bones Throne. Its current Prime Descendant, Tian Lunhui, is believed to be Yi Shi's reincarnation. He is also one of the three heroes of the Sacred Nether World; three main competitors for the Heaven's Will in current generation.