The oolong tradition was born in Fujian Province on China's southeastern coast, and the province remains a leading producer, although more recently Taiwan has emerged as an equal. While green tea is produced throughout China, oolong tea is highly prized.centreto the southern parts of the country. Here the climate is subtropical and humid so the tea plantations are located in the cooler mountain regions. Up in the rugged, inaccessible mountains, the conditions for cultivation are very special and differ from tea regions further north in China. Here there are mountains, rugged nature, high humidity and the plants often grow as large as trees in contrast to the small, neat tea bushes that grow in the more northern tea regions of China.