One thing I want to emphasize: there is a general impression that the China of antiquity was underdeveloped in terms of communication and transportation; that it was a closed, conservative society, highly restrictive for its inhabitants.
總之，我要強調的是，一般印象中，以為中國古代資訊、交通不發達，所以，「大門不出，二門不邁」，保守閉塞，作為應該有限，這麼想，就低估了他們。