To discover if the jade hairpin was really meddling with us, I waited until Yin Xinyue was fast asleep to pull the hairpin out of her hair. I locked it in a safe then went to bed. 

It was later than midnight when I heard footsteps from the living room. I thought it was a thief. I woke up and looked around. Yin Xinyue had disappeared again!

I turned on the light in the bedroom. The safe where I had kept the jade hairpin had been opened. 

It seemed the problem laid with that jade hairpin.

I could have just taken the hairpin while Yin Xinyue was sleeping and destroyed it. It would have put an end to this case. However, I had already formed a bad habit of being curious to learn about the origin of the otherworldly item before solving it. At least, the spirit in the jade hairpin hadn’t harmed Yin Xinyue yet. 

Moreover, from what I’d observed, the spirit could be a resentful...