If you take the train to Chongqing North Train Station and don't know how to get to the place you want to go,you can ask the two old grandpas for help.They are Old Xu and Old Zhao.Old Xu is 75 years old.He lives near the station.Every morning he gets up very early.After breakfast,at eight o'clock he gets to North Train Station.He puts on his yellow waistcoat （背心） and starts to work——walking around and showing people the way.Old Xu works five to six hours a day and helps hundreds of people.He knows the bus routes （线路） in Chongqing very well,so people call him "a walking map".Old Zhao is Old Xu's "student".He is 70 years old.He thinks Old Xu is doing a good job,so he comes to help him.Both of them say helping others makes themselves happy.
These days,the two grandpas are learning English.Why?They see there are more and more foreigners coming to China and they want to help them.We must give them the thumbs—up （点赞）!
