A sanitation worker washed a man's car in thanks after received a bottle of water from the man in northern China.

CCTV footage filmed in the city of Xingtai in Hebei Province on October 31 shows a sanitation worker on a three-wheeler stopping in front of a shop, while a man named Du came out and got several bottles of water from his car trunk, and gave them to the worker and his colleagues.

After around half an hour, the sanitation worker drove back to use a water hose to wash Du's car.

According to reports, the sanitation worker thought Du’s children’s clothing shop was a supermarket and wanted to buy some water.

So Du gave several bottles of water to the worker and his colleagues.

Du said he felt it was very heartwarming as the sanitation worker washed car for him in return.

The video was provided by local media with permission.

10月31日，河北邢台，一位环卫大爷骑车到杜先生店门口，误以为该店铺是超市，想买几瓶水。杜先生听后从车里拿出几瓶水送给了大爷。杜先生称，当时觉得几瓶水没什么，没想到半个小时后，大爷回来用环卫冲水车帮他把车冲得干干净净。助人得到回报，杜先生感觉十分暖心。（视频由河北台提供）