In the 1970's, Luku began specializing in the growing of Tungting Oolong, and after winning a series of tea competitions began attracting tens of thousands of customers.
六十年代，種植面積增至三百公頃，以凍頂山、永隆、鳳凰地區為主。接著鹿谷又成為「凍頂高級茶生產專業區」；當地的茶農也爭氣，在農林廳舉辦的優良茶競賽中連續奪魁，一時吸引了上萬的茶客。