It takes 12 hours to transfer, and you can have 7 hours to visit after deducting about 3 hours to and from the subway and 2 hours to arrive at check-in early when you leave.
Fortunately, the places you want to go are not far apart. Let me help you plan the route. First of all, take the subway line 3 north from the airport south subway station, sit at Jiahe Wanggang Station, transfer to subway line 2, and get off at gongyuanqian station. You can go to Beijing Road Pedestrian Street for a stroll. If you don&;t buy anything, you can watch it in about an hour.
Go back to the original road and take subway line 2. Take one stop and get off at Haizhu Square Station. After leaving the station, go west for about two or three hundred meters. The Sacred Heart Cathedral in Shishi is on your right. You can go in and have a look. It takes about half an hour.
After watching it, I went back to Haizhu Square subway station. This time, I took Line 6 and sat at Huangsha Station. Not far from the station, there was a sand surface, which was a little big. If you had a good visit, it would take two hours. There was a sightseeing map in the sand surface, so you could visit it according to your own interests.
Then continue to take the subway, take Metro Line 1 to Changshou Road Station, walk to Shangxiajiu Pedestrian Street after leaving the station, and walk for at least one hour.
Go back to Changshou Road Station and continue to take Metro Line 1. Take one stop to Chenjiaci Station. As soon as Exit D comes out, Chenjiaci will be there. It takes about one hour for sightseeing.
After visiting Chenjiaci, it&;s time to go back to the airport. Take Metro Line 1 at Chenjiaci subway station, go to Sports West Station, transfer to the north line of Line 3, and go all the way to the airport south subway station.
If you want to visit all the above scenic spots, you will not only be very tired, but also have to take a cursory look. Personally, I feel that Beijing Road Pedestrian Street and Shangxiajiu Pedestrian Street are a little similar in nature. You can choose one to visit, or even neither.