Ding(顶),a degree adverb,was produced in South Song Dynasty,began to be developed in later Ming Dynasty after being unknow to the public in Yuan Dynasty and early Ming Dynasty and began to be used in northern mandarin after only being popular among the spoken languages of southern people.With the passing of the time,in later Qing Dynasty and Republic of China,the degree adverb Ding had been developed very well and completed the process of entering modern Chinese at most later in the 1930s and in the 1940s.Of course,it has certainly been popular in mandarin of modern Chinese thought it still stays at disadvantaged position in competition with Zui(最).