 The Ming were not able to effectively deal with the simultaneous internal and external threats, much less maintain a consistent defence along the Great Wall.In 1635 Hung Taiji renamed his people the Manchus and declared himself the emperor of a new Qing dynasty the following year.However, the Manchus were not yet willing to launch an invasion of conquest against the Ming; as Hung Taiji remarked in 1642, "The Shanhai Pass cannot be taken."