Dear Peter,
Having received your letter,I'm glad to share with you what I experienced last weekend.
In the morning, in order to go on a green tour, I along with my friend Daming chose to take a shared bike ride to appreciate the scene in our city. Having a little break after lunch, we decided to pick up some snacks around a supemarket nearby.Although there was a long line at the checkout counter, we didn't have to wait because we could use self-service checkout machine, which was really time-saving.What an amazing experience brought by hi-tech!I do hope you can come to China and experience all of these when you are free.Yours sincerely,
Li Hua