My Street Stall, the Whole World Begs Me to Stop Selling

Others earn money from street stalls, but my stall is deadly. My strength pills send a burly man flying three meters with a fart, my invisibility talisman makes an enemy run naked through the streets for three days, and my truth-telling gum makes the city lord publicly admit to secretly wearing women's clothes. All my products are defective, but each one hits the mark perfectly on the victim's weak spot. The system handles delivery, the narrator adds commentary, and I count money while being chased. Later, the whole city petitions for me to close my stall, the Heavenly Dao descends to beg me to stop innovating, and even the neighboring fake medicine seller kneels and calls me the master. I sigh and pull out a new product: 'Don't worry, this one won't scam anyone.' Narrator: (Last time he said that, he blew up half a sect.) — Description from novelcodex.org