Is “The incident of the Jing River Dragon King being beheaded in Wei Zheng's dream has no historical record.” true?

In Chapter 010 of "Journey to the West", the Jing River Dragon King is described as being beheaded in a dream by Wei Zheng because he privately altered the timing and amount of rainfall in a bet with Yuan Shoucheng. This event has no basis in historical fact and is purely a fictional combination of folk legends with early Tang dynasty rulers and ministers. Original text: "你违了玉帝敕旨，改了时辰，剋了点数，犯了天条。" (Chapter 010 of "Journey to the West")