I'm in zhengzhou now and would like to visit Shaolin Temple.

At the Central Coach Station near local main railway station, you can take a direct bus to Shaolin Temple. Buses are scheduled at 07:30, 08:30, 09:30 and 11:00. If you will depart in the afternoon, you can take a bus to Defeng first at the same bus station. After getting there, it shall be very easy to transfer to a direct bus to Shaolin Temple.