CHEFOO, a treaty port on the rocky north coast of the Shantung peninsula in north-east China (37° 33' N., 121° 22' E) . The port is naturally sheltered by outlying islands and in recent years these have been linked up by breakwaters to form a fully protected harbour. The port is more properly Yentai, Chef o0 being a village across the harbour. Population (estimated) 94,700. The tangled hill country of Shantung rises immediately behind Chefoo and its communications with the interior are only by pack-mule trails. A branch line of the Tsingtao-Tsinan railway to Chefoo is projected. Chefoo was opened to foreign trade in 1863. Since 1907 the trade of Chefoo has remained consistently at just over Hk. Tls. 30,000,000 (Hk. Tls. 34,335,785 in 1926). Similarly, Chefoo retained among Chinese ports the loth place until 1907, since when it has fallen to the 18th. It is the market for the tussore silk industry of the Shantung hills and raw silk constitutes its staple export. In general agricultural produce, however, the main volume of the export trade from hilly Shantung passes through Kiaochow on the south side of the peninsula. Across the Gulf of Pechihli the peninsula of Shantung faces the very similar peninsula of Liaotung and between Chefoo, on the Shantung, and Antung, on the Liaotung side, a considerable trade has grown up, especially in silk, which each peninsula produces and each port manufactures. In this direction, however, it appears that Antung is growing at the expense of Chef oo.