What is the size of cursive script in Wang Xizhi's seventeen calligraphy posts?

Famous posts left in ancient times are almost all in small print, two or three centimeters in size. Preface to Lanting Collection, My Nephew Plays Shu, Shu Su Tie, Preface to Saint Education and so on. At that time, there was no big paper, and the words were all small rolls and the like. Only in the Ming Dynasty did big paper appear. Wang Duo is a representative figure in writing big characters. Calligraphy began to seek visual impact and began to be mounted on the wall.