Treasure Cave Introduction: Legend has it that when Genghis Khan commanded the Western Regions, the ancient King of Qiuci fled with his treasures. The Wang nobles hid in Dayu and hid their treasures in this cave and sealed the entrance to protect them from Yuan soldiers. Manhunt. In the 1960s, two brothers went into the valley to hunt for treasure and discovered a treasure cave. They took the treasure and fled to a foreign country, leaving only the remains of a wooden ladder that is rotting below the entrance of the cave. Later, people continued to search for treasures in the valley, but they never found another treasure cave. They only accidentally discovered the iron and copper smelting sites of the Han Dynasty on the hillside on both sides of the valley entrance.