Two modern girls show their new looks in a black mud health center in southern China's Guangzhou city. Sept.21 - South China's first black mud health center opened on Wednesday in Guangzhou city, capital of Guangdong province.It has attracted many trendy young people to have a try of this unique bath treatment. Customers can enjoy black mud bath or hot salt treatment in the center, according to the local newspaper Information Times.It's reported that the mud and salt used in the center are all from a hundred years' old salt pan in western Guangdong.