Hong Kong Crossover: The Zero-Cost Shopping System, Robbing Hua Tian's Gold Shop

He transmigrates to the 1980s and joins Wo Hop To as a low-ranking 49er, only to be dragged into the gold-shop robbery in The Stool Pigeon. He awakens a zero-cost shopping System, gaining master-level combat and firearms skills by drinking enhancement potions. He turns on the gangsters, swallows the stolen goods, and strikes back. By exploiting the information gap between the police and the underworld, he rises to become Wo Hop To's White Paper Fan, then cleans up his act and becomes a new tycoon of Hong Kong.