China’s Hukou Reform: Zhengzhou Could Become First Megacity to Relax Hukou Restrictions "With China determined to reform its “hukou”, or household registration system to solve migrant workers’ residency challenges, boost urbanization, and spur domestic consumption, Zhengzhou may become the first Chinese megacity to declare a ‘zero threshold’ for hukou registration. The Zhengzhou Municipal Public Security Bureau has currently published an exposure draft of its amended hukou guideline for comments and feedback. We discuss the draft and its implications for China’s regional economies."