Take Bus 224 Express from Baiyun Hotel to Liuhua Bus Terminal. Then walk about 200 meters to Baima Market.

Thanks Jerry
Also pls tell me if I should take the same bus no 224 from Liuhua Bus terminal to come back to Garden hotel

Sorry Sim. It should be 242Express. Yes, you can take the same bus when you are back and it stops at Garden Hotel while going back. You can also take Bus 234 to Guangzhou Railway Station (near from Liuhua Bus terminal and Baima), the same bus when you are back.
Good Luck~

Thank You Jamie
Also noted the correct Bus no is 242 and not 224