This particular region is also very special as it is home to major mountainsides and districts that stand as the front runner, and perhaps even the onset, for tea production in Taiwan. Famous mountainsides include Dong Ding which may have spearheaded tea growing on the island with farms dating back to the mid 19th century. This area is now a globally recognized production region, encompassing over 4,000 farmers with tea growing at elevations from 500 to 800 meters. Zhu Shan is also another mountain range which has been prized by the Taiwanese as an area for tea production, especially Shan Lin Xi. Ranging from 1,600 to 2,000 meters, farms there are known to produce high quality oolongs as the leaves are grown on the steep slopes of mountainsides while gradually developing its flavor from the microclimate. Lastly, the county is also accredited to the onset of black tea production during the early 1920s in the small surrounding areas of Sun Moon Lake. During the age of colonialism, Japanese occupants set out to rival India’s black tea production as they deemed the region of Sun Moon Lake to be the ideal location for growing and producing black teas. They have imported leaves from Assam, and since then have produced black teas, creating Taiwan’s own variants by pairing with indigenous tea leaves.