http://upload.wikimedia.org/wikipedia/commons/c/c3/Han_map.jpg

http://upload.wikimedia.org/wikipedia/commons/8/87/Asia_500ad.jpg

http://upload.wikimedia.org/wikipedia/commons/a/af/East-Hem_600ad.jpg

Tang dynasty

http://upload.wikimedia.org/wikipedia/commons/5/51/China-Grand_canal%2C_Sui_and_Tang.svg

bridge on the Grand Canal

Emperor Wendi—founder of the Sui dynasty

imperial palace in Chang’an