Walking Yin and Yang: I Sell Yang and Longevity in the Human World

As an ordinary college student, Jiang Feng was suddenly reborn and awakened the "Ghost Voucher System"! As long as you help the ghosts fulfill their wishes, you can get Yangshou that can be used for trading! "Mr. Jiang, my place is haunted!" "I'm going right now!" "Mr. Jiang, I want to live a few more years..." "No problem, as long as the soft girl coins are enough." "Mr. Jiang, why are there a bunch of ghosts in your room?" Jiang Feng was shocked: "What, there is such a good thing?" Then there was a road of fire and lightning...