What requirements do these two slogans contain for people: 1. Leave nothing behind but your footprints; take nothing away but your memories.

Leave nothing behind except your footprints; don’t take anything away except your memories. It tells tourists not to graffiti, litter, or damage the environment; not to damage public property, pick flowers, etc.

It’s your fault if you don’t come the first time; it’s your fault if you don’t come the second time. Our fault is that if you don’t come the first time, it’s because you have no vision.

If you don’t come the second time, it’s because our products and services are not good...