We arrive by bullet train from Luoyang Longmen Railway Station to Zhengzhou Railway Station.

You are advised to take metros to go there directly, which is more convenient than buses. Upon arrival, you can take metro line 1 at the railway station to Zijingshan Station, and then transfer metro line 2 to Guanhutun Station, Exit C. After that, you need to walk about 860 meters westwards along the Nongye Road to the destination. The ticket fare is CNY2/person. The duration is around 30 minutes.
If you take a taxi there, it will cost around CNY20 with the duration of around 20 minutes.

Thanks Tina! This is very usefull! Do you know the opening tiles of the Henan Provincial museum? On a guidebook I read that it closes for lunch break but on their site and in the guidebooks it opens from 9-17.