Let us then consider the position of this town, above all in relation to the three principal outlets of its trade--I mean the supply of the court at Pekin, the export at Canton, and the general demand of the country. If the reader will consult a good map of China, one that shows the rivers, for these are the real trunk-lines of the commerce of the country, he will soon understand in what a commanding position King-te-chen is placed. It is true that the distance from Pekin is not far short of a thousand miles, following the winding course of the Grand Canal, the Yang-tse river, and the waters of the Po-yang lake; but by this route there is water communication without a break for the whole way.[76] So again the whole journey to Canton may be made by boat, with the exception of a short portage over the watershed on the borders of the provinces of Kiang-si and Kuang-tung. This was the route taken by Lord Amherst in 1816-17, when returning overland from Pekin to Canton. The journey is well described by Sir John Davis in his _Sketches of China_. As they approached the Po-yang lake, the porcelain shops and depôts in the towns became more and more prominent. These were supplied from the emporium at Jao-chau Fu, the great city near the spot where the river descending from King-te-chen falls into the Po-yang lake. Davis describes the beautiful scenery and the classical associations of the mountainous country surrounding the lake. Proceeding southward they ascended the Kia-kiang river, passing by Nan-chang Fu, a great centre for the commerce of southern China. The river is very shallow in its upper course, but along it passes a constant stream of traffic, by means of a narrow passage scooped out in the shingly bed. The Meiling Pass is crossed by a paved road, partly excavated in the rock and in places cut into steps--a road made some twelve centuries ago by an emperor of the Tang dynasty. After a journey of some thirty miles on horseback another stream was reached, down which they floated to the great Western River and the waters of Canton. It is by this route that nine-tenths of the Chinese porcelain that has reached Europe must have passed. How this porcelain is packed at King-te-chen and forwarded to Canton and to other parts of China is well shown in a series of native drawings exhibited by the side of the cases containing the porcelain in the British Museum.