YINGCHENG City in cen-tral Hubei Province covers an area of 1,100 square kilometers and has a population of 630,000. The discovery of Neolithic sites dating back 4,000 years in its Menbanwan and Silonghe districts are testimony to the city’s long and glorious history.Yingcheng is abundant in gypsum, rock salt and hot spring resources, all of which have added impetus to the thriving local economy. Its high purity rock salt deposits near the earth’s