 In the early sixteenth century, a new version of the "Cantong qi", anachronistically called "Guwen cantong qi" 古文參同契, or "Ancient Text of the Cantong qi", was created on the basis of a complete rearrangement of the scripture.This version divides the sections in verses of 4 characters from those in verses of 5 characters, following a suggestion that was first given by Yu Yan in his commentary of 1284.Yu Yan refers to this as a sudden realization that he had after he finished to write his work