1. Take the north extension line of Metro Line 3 at the South Airport Station (terminal 1), go to Tiyu West Road, and arrive at Jiahe Wanggang Station after 4 stops.
2. Transfer to the subway 14 line at Jiahe Wanggang Station, head east, and arrive at Xinhe Station after 7 stops.
3. Transfer to subway 14 line at Xinhe Station, and get to Zhenlong Station after 9 stops.
4. Change from Zhenlong Station to Metro Line 2 1, head for Zengcheng Square, and arrive at Zengcheng Square Station after 7 stops.
5. Finally, walk about 10 meter to Zengcheng Square.
The whole route is about115km, and it is estimated to take about 9 hours. Please note that the specific route and time may change. You can check the latest subway timetable and line information on official website or related mobile phone applications. At the same time, if you need more detailed travel guidance, I suggest you consult the local subway service desk or ask the airport staff for help.