Do you mean Bozhou in Anhui Province? The distance between these two cities is about 270 kilometers. Both of train and bus is running between them. For the train information, you could refer to https://www.travelchinaguide.com/china-trains/

The Zhengzhou Bus Terminus, just in front of Zhengzhou Railway Station, has 6 coaches to Bozhou at 11:20, 12:00, 14:00, 15:30, 17:20 and 20:20. The journey is 5 hours and the fare is around 75RMB per person.