Hu hu~
I m impressed with here people got nice feelings with China; )) most of u are experts for exploration!
Now let a real chinese who was born in China and grown here give u some advices.(there is no order for the destinations below)
1 the great wall
it's not important frm where u visit it,the key is u really stand on the great wall and feel how great it is...some hot view points just been exploit for tour,often very crowded,if u have an available time u should have u own exploration with it
2 Hu Tong
which is very very attracts me! here in Beijing is mordern and cultural mix,dont just pay attention to those new mordern buildings and old buildings for imperial kinsmen in ancient China...because there are lots ancient points from normal people u can see when u walking in Hu Tong,the old buildings for ancient normal people will be representation of fantastic chinese culture which those really reach my heart
3 Hu Kou waterfalls on yellow river
as other people metioned it's rerely and very powerful!!!And...it's a part of our chinese mother river^^
4 Su Zhou
the most completed old town in china,dont miss it,where it's a deep touch with the old China
5 Tibet
surgest better go here by train in China,so that u can also feel the process for going the most highest place in the world,enjoy

)~*