Super Flash Sale: I'm Not Interested in Money

Introduction: Cheng Xiaoming, who was down and out, accidentally discovered a magical small program on his mobile phone. "Building 6 of Junlin Palace, a flash sale of 9.9 Yuan for a limited time." "50 Shares of Junlin Hotel, a flash sale of 9.9 Yuan for a limited time." "A Rolls-Royce Phantom, a flash sale of 9.9 Yuan for a limited time." When Cheng Xiaoming selected a building for flash sale, the property manager asked him, "What building are you in, and which unit are you the owner of?" "I'm from Building 6." "Which unit in Building 6?" "I just bought the entire building, so the entire Building 6 is mine." Since he got this small program, Cheng Xiaoming has understood one thing. It turns out that nine yuan can not only free shipping, but also sell many things instantly...