Live Broadcast: the Paper Figurine I Burned Became a Spirit in the Underworld

The protagonist inherits a paper-making shop and discovers that the things he made will turn into real top-notch treasures when burned to the underworld. So the protagonist began to receive "orders from the underworld". In the underworld, he is live-streamed doing handicrafts, and is ridiculed by netizens for being feudal and superstitious; in the underworld, he is the largest arms dealer/supplier of luxury goods, and is respected by all ghosts.