Is it better to go to Shenzhen or go to Guangzhou for a day trip?

For a day, I personally feel that Guangzhou is more interesting. Although the time is short, it is still good to try morning tea and visit scenic spots, such as Whampoa, Guangdong Museum, Canton Tower, and night tour of the Pearl River.

It is recommended to go to Guangzhou, Guangzhou has profound cultural heritage and historical and cultural relics, and there are many delicacies

It depends on personal preference, if you like old Guangzhou, you can choose Guangzhou. I think one day trip can go to Shenzhen, Happy Valley, Window of the World, Splendid China, all in one place, one day is enough.