Zhengzhou can take the Third Ring Road. According to Zhengzhou's restricted policy, Zhengzhou's restricted area is within the Third Ring Road, excluding the Third Ring Road. So you can take the third ring road. Extended data:

Zhengzhou Third Ring Road Zhengzhou Third Ring Expressway: namely West Third Ring Road, South Third Ring Road, North Third Ring Road and East Third Ring Road (107 auxiliary road). West Third Ring Road: (North Third Ring Road-South Third Ring Road) is an expressway, and the North Road of West Third Ring Road under construction (planned road name) is "North Third Ring Road-North Fourth Ring Road".