In 1974, Teng opened a medical testing laboratory in Puli. Besides providing Teng with a livelihood, the lab also brought him into contact with the aborigines, among whom he would make many friends.
民國六十三年，鄧相揚在埔里開業，「向陽檢驗所」不只是他賴以維生的經濟來源，更是他與原住民接觸、交朋友的管道。