Lin Wan, who has been unemployed for three months, has to struggle repeatedly to buy a 15-yuan bag of beef balls for her daughter. She is overwhelmed by the mortgage payment, tuition fees, and medical expenses. Until a purchase of 23 yuan in the supermarket accidentally activated the Shenhao 100-fold rebate system - spending 23 yuan will get 2,360 yuan back, and spending 386 yuan will get 38,600 yuan back! From then on, she was no longer a poor mother, but a "consumer koi" who could buy dolls for her daughter, nuts for her husband, and easily shoulder the burden of the family. When her bank card balance doubled, she not only regained her confidence in life, but also rekindled a happy life for herself and her family with daily necessities.