I need to ask how to go to the Zhengzhou railway station near erqi from Xinzheng Airport.

Well, you can take Subway Chengjiao Line and transfer to Line 2 at Nansihuan, and then to line 1 at Zijinshan. At last, get off at Railway Station. It costs CNY7.

Alternatively, high speed trains are available for the route. You can get to the railway station in 25-30min, and the first class seat costs CNY16.