There is no direct bus at Shuangliu Airport, so you have to transfer to downtown. You can take bus No.317 at the airport to the East Railway Station, then change at Wuguiqiao Bus Station and take a bus from Zizhong. The timetable is not clear, but there are more trains. It is suggested that bus No.304 be rerouted and not reach Wuguiqiao bus stop.