Is Wuhan Tianhe Airport Expressway etc free?

It is not free. According to the "Implementation Plan for Exempting Small Bus Toll on Major Holidays of Toll Roads in Hubei Province" approved by the provincial government, Tianhe Airport Expressway and Wuhan Urban Road, Bridge and Tunnel ETC Toll Roads are not free. Airports, also known as airports and airports, are more formally called air terminals. Airports vary in size, and there are towers, aprons, air passenger stations, maintenance workshops and other facilities.