Are there buses from Yuntai moutain to Kaifeng or to zhengzhou railway station? What time? How much?

There is no bus from Yuntai to Kaifeng. If you want to go to Zhengzhou Railway Station, you need to take bus from the mountain to Jiaozuo Coach Station first, then take bus from there to Railway Station. The bus departs from 6:20 to 17:00 with interval of 1.5-3 hours with CNY28.