Demonic Blood Tomb

I am Chen Hua, the young head of the Chen family, one of the four major tomb robber families. When I was packing up the relics left by my grandfather, I found a key and a map in the interlayer of one of his clothes. This key is used to open the lock and what revelations does the map give me? I will solve these mysteries one by one. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.