Please suggested me how can I travelling from Wuhan airport to Xinyang City.

From the airport, you can take the shuttle bus to arrive at Wuhan Railway Station first. Then you can find many high-speed train to XY East Railway Station. The train schedules are from 06:45 to 20:56 with the duration of no more than an hour. By the way, first class seat costs CNY145.5,
second class seat costs CNY91.5 and business class seat costs CNY288.5.
In addition, you can purchase the train tickets at the railway station. But for your convenience, you are suggested to book them in advance online. TravelChinaGuide provides such service. You can ask help for them. If interested, their contact information is bookingtravelchinaguide.com.