jīng háng dà yùn hé
the Grand Canal, 1800 km from Beijing to Hangzhou, built starting from 486 BC
京
jīng
abbr. for Beijing 北京[Bei3 jing1]
杭
háng
abbr. for Hangzhou 杭州[Hang2 zhou1]
大
dà
big; large; great
运
yùn
to move
河
hé
river (CL:條|条[tiao2],道[dao4])