How much is it to take a taxi from Changsha Railway Station to the airport in the morning?

It's not too late to take the first airport bus (06:20). Changsha Railway Station is out of wuyi avenue, and there is a sign of Civil Aviation Hotel about 300 meters ahead on the left, which is the ticket office of Changsha Civil Aviation by airport bus. It takes 23 kilometers/16.5 yuan /35 minutes to get to the airport. If you take a taxi to 80 yuan, you can get there in 30 minutes without traffic jams in the morning. I took a taxi in Changsha.