It was an unusual night but the night sky was very bright as lightning glazed across with strong wind and brightened up the sky that brought on the heavy rainstorm .
This happened at 1:57am on 4 August 1981 which led to the dramatic collapse of the Famen Temple, a 13-storey pagoda in Shaanxi province, China. As if it was an indication from an unknown divine power , the Pagoda starts to crack with one of its side slides down with half of the pagoda standing , the pagoda was in vain trying to highlight to the world of its refusal to fall, with its clear intention to protect its underground crypt below .

This incident caught and drew universal attention around the world when news broke out the following day. Like a tale straight out from a fantasy story , a sealed and forgotten underground palace was discovered after the pagoda on top of it finally totally collapsed. Inside the crypt , one chamber led to another, revealing hidden treasures that had not been seen for more than 1,000 years. it resulted in the discovery of forgotten treasure dating from the Tang dynasty and beyond . Over the centuries, the idea of such a palace existing within the temple grounds turned into myth. Many had believed buddhist veneration ritual did took place at the temple before ,but subject of hidden treasure has been common folk's rumors, and temple performing rituals were common in those days especially before the suppressive political movements, but since no one could find it, the story was discounted.

Even when it was rebuilt during the Ming Dynasty at the same location, it was never found then , as archaeologist found a different base foundation has been built over the original base . Therefore there was No record of the Underground palace mentioned or ever written in any historical document thereafter.