What line train from baiyun airport to onelink?

You can take the shuttle bus line 5 to Haizhu Square. And then walk about 250 yards, you will reach the onelink Plaza.

If you want to travel by subway, take the following route: Take the subway line 3 from the airport to Jiahe Wanggang and then transfer to line 2 to Haizhu Square. Take the Exit B1 and walk about 400 yards, you will reach there.