best way to go to zhuhai from baiyun airport

airport bus shuttle does not say exactly which bus to take to go to Yuexiu bus station to catch the express bus to Zhuhai gongbei?

what is the easiest and fastest way to go to Zhuhai gongbei.
we are 70 years old tourists and need the most relaxing way to arrive to zhuhai gongbei by bus from airport baiyun. thank you.