Nevertheless, Lung-chhüan ceramics gained an extremely wide market, both in China and abroad. Several kilns set up in competition to manufacture Lung-chhüan-style wares. For example, in the Sung-Yuan periods I-yang 益陽 in Hunan province was active, while the Liang-tzu-hu 梁子湖 kiln district of Hupei province was a major kiln centre with hundres of kiln localities making Lung-chhüan style greenwares.