I visit Guangzhou stay near a Aiqun Hotel. I want to go to Chimelong Ocean Kingdom in Zhuhai.

You can walk to Haizhu Square to take subway line 2 to South Railway Station, then take a bullet train to Zhuhai. Upon arrival, take bus K10 from Gongbei Port Station to get there directly. There are many train departures per day and the rail duration is about 60-80 minutes.

You can also take subway line 2 to main railway station. Then take a long-distance bus from the nearby long-distance bus station to Zhuhai Gongbei. Then take city bus K10 to the Ocean Kingdom. The long-distance ride takes about 2 hours and there are also many schedules per day.
Have fun~

Thank you very much for your information Lilian, blessings!.