Located near the "tea township" of Luku, Yen Cheng Li produces Tung Ting Oolong tea which is noted for its mild flavors.
延正里位近「茶鄉」鹿谷，產的也是烏龍茶，雖沒有鹿谷凍頂的聲名遠播，卻以產期較長、香味清淡，在中部茶區間闖出字號，其中又以「冬片仔」，也就是當地人習稱的「六水仔」，最受歡迎。