In the real world, even if Xu Jing was known as a super elite scholar who had an excellent mind and structured planning ability, accidental mistakes could happen from time to time. After all, uncertain possibilities were rather vague in real life.
But in the manga world, there was never such a thing known as accidents, or you could say it in a way that even if accidents do happen, those were merely the creator's arrangements. As for now, Zhao Youyue had taken control of the manga's flow and everything would proceed perfectly according to Xu Jing's script, after all the mangaka had to inherit Xu Jing's will. Besides, Su Li was not able to change the manga's direction anymore and these were indeed the consequences of using Xu Jing to make "Pure Romance" popular.