I work as a security guard at a cemetery, and I overhear the dead chatting about getting rich quick.

[Superpowers + Spiritual Resurrection + Humor + Finding a Bargain + Multiple Girlfriends] On graduation day, my roommate got a job at a big company, and my ex-girlfriend got a job.
I was the only one who became the night shift security guard at the cemetery.
On my first night at work, I overheard two graves arguing. One was cursing its grandson for selling a monkey stamp for twelve yuan, while the other was cursing its son for exchanging an antique for two packs of cigarettes.
The next day, I bought a bargain for eighty yuan and resold it for six thousand eight.
From then on, I realized that the dead are more honest than the living.
They talked about inheritance, antiques, where money was hidden, and secrets that couldn't be made public.
I amassed a fortune through grave-gossip, until one night, the deceased curator cursed from his grave:
"The national treasures in the display case are fake."