we passed the jade gate the past that was once at the frontier where china ended and central asia began. the tang dynasty poet wang wei once wrote if you go further west you will see no more friends. for centuries china's harbors have been its gateways to the world and those great ways have only grown. we board a ship to embark on the next stage of our journey along the maritime silk road. the harbor is enormous spot it's just one of many in the country of the world's 10 largest harbors 7 are in china. some $25000000.00 containers pass through sham gens harbor each year filled with