Which bus can I take from Ao Yuan Plaza to the Guangzhou Baiyun International Airport?

There is around 70km between the two places and no direct bus service is avaliable. Transfer is required. Walk from the plaze to Xiliqiao South stop to take bus no. Panyu 15 (番禺15) to Panyu Hotel. Near which you can transfer to shuttle bus line 7A to Baiyun Airport.