Which is the most intersting place of China for you?

I am actually currently in China, working as an ESL teacher, and there are so many places I want to visit. I spent the summer up in Meizhou doing some English summer camps, so I'd love to return there as it's so quiet, clean and peaceful. I also want to go to Tiger Leaping Gorge, Sanya and Xian, as I've heard that all are beautiful. I'd also like to spend some time in Shenzhen, and of course, before I eventually leave, I'd like to visit Beijing and see all the attractions - The Great Wall, The Forbidden City, The Summer Palace etc.