Middle Chinese adverb Geng was used in a varity of grammatical meanings: expressing a tone of transition or rhetoric question ;the repeated occurrence of actions;and the reaching of a further degree .

• 中古汉语副词“更”语法意义比较复杂，既可表示转折或反诘语气，也可表示动作行为、情况反复、轮迭进行或出现，还可表示程度的加深；