Where should college students travel for seven or eight days in summer vacation?

I think we can travel to many places in the summer vacation of seven or eight days, such as the beautiful Xi 'an, which is very suitable for students to travel.

When I was in college, I went to Xi 'an, which was great, because it was an ancient capital of 13 dynasty. There were many things buried there, and many historical sites that everyone could find, such as the Terracotta Warriors and Horses, one of eight wonders of the world, which made people feel incredible, but after I went there, I saw the famous Hukou Waterfall, which made people feel amazing.