Yes, see Wikipedia!

Hi The mass is at 3:30 in the afternoon that's at Sacred Heart ,if you want to catch the morning mass then you can visit Our lady of Lourdes at shamian islands which is at 11 am and of you want to go for evening mass then you can go to St Anthony's chapel at Tianhe at 6 pm Hope this is helpful

Hi "Ryan M": The Cathedral, which is really worthy of a visit [1-2 hours is suggested] is open daily from 8:30 until 5:30. Mass is conducted in English on Sundays (in other languages on different days)... but, there has been a recent accord between the Government of China and the Holy Roman See... which may result in different arrangements. I hope that this information has been useful.

We were there before noon. There were people there, but not overwhelmingly so. Of course we went in mid-April and a non Catholic holiday, so that might be a factor.

Sorry I do not know but you could try the Internet or simply phone

Haizu suare at Pearl River