The Thirteen Heavenly Kings had only just formed, and their loyalties had not fully consolidated when, after two great battles, Ye Tianchen was severely wounded, his life hanging in the balance, and had not returned. Some members had already started to feel resentful, believing that Ye Tianchen was surely dead and would not return, and that the Thirteen Heavenly Kings would disband. They wanted severance pay.
Zhang Lei and his twin brother Zhang Da naturally stood together and were among the ringleaders of the unrest. Their strength was formidable; if the two brothers joined forces, Wuxue and Wang Jie would find it very difficult to take them down on their own, and doing so wouldn't be advisable. Infighting would only convince others that the end of the Thirteen Heavenly Kings was indeed imminent.
