Does Xinzheng and Yizheng holds the same population?
Xinzheng:  The city has a population of 600,000 people and covers an area of 15 km2 . Yizheng: Yizheng () is a county-level city under the administration of Yangzhou, Jiangsu province, China, with a population of about 600,000 (2007).
i don't know