After starting off with such subjects as religious beliefs and tribal customs, the old folks slowly got to the point where they were willing to break their silence on more sensitive issues. Teng does his homework In the field of anthropology, there has been a growing trend in recent years to rely on the results of field studies to check the veracity of historical records.
近年，人類學上對於問題的考據，除了文獻資料外，透過田野調查訪問來對照歷史記錄以辨真假，已成為一種趨勢。