Lao Huang, who was sick at home alone, was attracted by the promotion of a physiotherapy shop. The clerk vowed to cure his illness and promised to experience the free three days. The simple old Huang Wanwan did not expect that he had stepped into the promotion package of the merchant step by step. After the three-day experience, Lao Huang was indeed treated with red light, but he had to pay an additional product cost of more than 500 yuan for essential oils. When Lao Huang used his trembling hands to take out hundreds of hard-earned money wrapped in three plastic pockets and four layers of toilet paper, the original profit-seeking merchants modified the original line of story design. The physical therapist Lao Hu decided to treat the old yellow physiotherapy for free for one month.