Hello, I'm Lily.I'm from America.This is my family's travel plan.We are going to travel around China during the summer holidays.We' re going to stay in China for two weeks.In the first week, we are going to visit Beijing, Harbin and Xi' an.I know the Great Wall is in Beijing.It is the longest wall in the world.The second week, we are going to visit Shanghai, Hangzhou and Sanya.I know the West Lake is in Hangzhou.I hear it is a very beautiful lake.Can you tell me something more about Harbin, Xi' an, Sanya and other places?