It is the moral responsibility and academic insistence of textbook writers to ensure the truth of
textbook materials; If the textbook writers do not check the truth of the textbook materials, their essential
qualification as a textbook writer is lost. The writers of Expressway to Chinese (Advanced) claim that
they “do not check the truth of textbook materials.” and untrue materials do appear in their textbook.
It is definitely unacceptable to break this bottom line of social morality and academic responsibility in
textbook writing.