“而”是个象形字。《说文解字》上说:“而,颊毛也。”它的本义就是面颊上的毛,也就是胡须。这个字很早就被借用作虚词,所以古代文献中作胡须解的“而”字并不多见,以至于一般人不了解它的本义。 “And” is a pictograph. “Shuo Wen Jie Zi” said: “And, cheek hair also.” Its original meaning is the cheek hair, which is the beard. This word was borrowed as an imaginary word very early on, so the word “and” for the beard solution in the ancient literature is rare, so that most people do not understand its original meaning.