Qian Shijiu became terminally ill after losing his job. In order to treat his illness, he converted an underground garage into a small supermarket. When the supermarket was completed, it was accidentally linked to the Wanjie sales system. By selling materials and making transactions with residents of different planets, he could survive from commissions.
Through Xiaoya, Qian Jiu learned that there had been a three-year drought there. After selling supermarket supplies, he received life extension and genetic improvement fluid (which could improve genetic diseases) rewarded by the system. He decided to hand over the things to the state. Because the system stipulated that he could not tell others about the system, Qian Jiu contacted the state from a young age through hints, and since then secretly developed behind the back of the system and the state.
Purpose: develop the country