City: My convenience store gives rewards every day

Lu Yu, who opened a convenience store at the entrance of the university, suddenly received a system.

As long as the item was sold, the random reward could be activated.

"Ding, you have sold a bottle of water. A random reward of 100 million yuan is the villa, Lanting Villa!”

"Ding, you have sold a lollipop. Random reward: 50 million Aston Martin 0ne-77!

"Ding, you have sold a doll. You will be randomly rewarded with a personal maid!”

"Ding, you have sold a toy gun. Random reward is a military factory!”

Female Streamer: " Mr. Lu, may I ask, what is the secret behind you being the richest man in the world for five consecutive years?"

Lu Yu said,"I have to start from the convenience store I opened."。。。。。