双向奔赴的善意！山东肥城的两个学生电动车坏了没钱修，修车店老板王先生免费帮忙更换。没想到第二天学生托人送来了20元。

The goodwill of traveling in both directions! Two students in Feicheng, Shandong had broken electric bikes and couldn't afford to repair them, so Mr. Wang, the owner of a repair shop, helped replace them for free. I didn't expect the student to have someone deliver 20 yuan the next day.