Mojin: Guardian

Prequel to Mojin films. It tells the story of young Hu Ba Yi’s first journey into a tomb to find gold. Hu Ba Yi and his friend Fatty Wang are hired by a mysterious boss to go to Old Black Mountain to look for the gold-detecting penannular jade.
(Source: Letterboxd)
~~ Adapted from the 1st volume in the novel series "Candle in the Tomb" (鬼吹灯) by Zhang Mu Ye (天下霸唱).