According to Annals of Joseon Dynasty, Nam Gon now set out to slander Jo and wrote a phrase "Ju cho will become the king" (주초위왕, 走肖爲王)" with honey or sugary water on mulberry leaves so that caterpillars left behind such phrase on leaves in the palace. When two Hanja (Chinese) characters "ju"(走) and "cho"(肖) are put together, they form a new Hanja character "jo"(趙), which happen to be Jo Gwangjo's family name. Consort Hong or Consort Park showed the leaf to Jungjong and claimed that this was the heaven's warning that Jo would take the throne himself after eliminating Hungu faction. Jungjong, who himself rose to the throne through a coup d'état, began to distrust Jo Gwangjo. Goryeo dynasty fell and was replaced by Joseon dynasty, there was popular saying "Son of wood will gain the country" (목자득국 木子得國). When two Hanja characters meaning wood(木) and son(子) are combined, they form a new character "yi"(李), which happens to be the family name of Yi Seong-gye, who deposed the last king of Goryeo and founded Joseon dynasty. These phrases helped Yi Seong-gye win popular support for the new dynasty as heaven's will.