This site in the Peal River Delta abounds in unusual towers built for defense and as a refuge from natural disasters Jiangmen, in the Pearl River Delta in south China, is an enchanting city. Under its jurisdiction are Xinhui District and Taishan, Kaiping, Enping and Heshan cities, historically known as Wuyi (five counties) because of their shared popular customs. This site in the Peal River Delta abounds in unusual towers built for defense and as a refuge from natural disasters Jiangmen, in the Pearl River Delta in south China, is an enchanting city. Under its jurisdiction are Xinhui District and Taishan, Kaiping, Enping and Heshan cities, historically known as Wuyi (five counties) because of their shared popular customs.