He is highly interested in the degree of openness during the Tang dynasty, but he feels that the farther away from us an epoch is, the harder it is to write about, because one must spend a great deal of time researching and considering--when they drank tea, what kind of tea did they drink? When they ate, how did they eat? What kind of clothes did they wear?
他對唐代開放的程度很有興趣，但覺得離開我們越遠的朝代，下筆越困難，因為他們喝茶喝哪種茶、吃飯怎麼吃、穿哪種衣服，考據需要時間。