Transportation to Pearl River

It is so close that you can walk to reach there directly. For the detail direction, I suggest you to ask your hotel staff and I am sure they can tell you more information than I told.
To reach Canton Fair, you can walk to Haizhu Plaza where you can take local subway line 2 to reach Changgang and then change to line 8 to reach Pazhou Station. In this station, you can follow the direction boards to reach the exhibition center of Canton Fair.