The following places are the best attractions in Guangzhou:
Ancestral Temple of the Chen Family
Chimelong Resort
Huaisheng Mosque
Lotus Hill
Nansha Tianhou Palace
Shamian Island
Sun Yat-sen Memorial Hall
Temple of the Six Banyan Trees
Western Han Nanyue King's Tomb Museum
Guangzhou Zoo
South China Botanical Garden
Guangzhou Ocean World
Guangdong Provincial Musuem
Beside these, you must go to the wholesale markets and shopping areas such as Shangxiajiulu Pedestrian Street and Baima Commercial Center for shopping.
Have a nice time!