Chimelong is worth visiting, especially with children. It is the best wildlife park in China and even Southeast Asia.
However, it is not recommended to go to Million Sunflower Garden. First, it is a long way and the tickets are expensive, so there is nothing to see.
There are many interesting places in Guangzhou. You can go to Xiaozhou Village Biological Island, Changlong for two days, Shamian, Yuexiu Mountain and other traditional attractions, and all kinds of delicious food.