When I was in college, I went twice. Two years after graduation, I took advantage of May Day to visit my school and invited friends to play with me. Friends describe Beijing's Great Wall as an old man who has experienced the wind and frost, and the Great Wall of the South of the Yangtze River is like a young man who is thriving and vigorous! _________ Although it's hot, it's not as determined as tourists to climb the Great Wall. It's good to have more people and more people. We all talk while we play. Don't mention how happy we are!