Falling For Ghost King

I am Xiao Xian , age 18 not very talkative .Thought I was dead after being pushed into the cliff by my only friend. But somehow landed on an underworld abyss . I was forced to the palace and accused for killing the princess of abyss and presented to the merciless ,"Ghost King". He even killed his own family and friends for power . Will he kill me aswell !! But I haven't done anything . Please !! Someone ! help me from this demon!!