You don't need to leave the station and then enter the station to transfer at Guangzhou South Railway Station, because you can transfer directly at the station. Now Guangzhou South Railway Station has opened a convenient transfer channel. Passengers only need to buy a connecting ticket, and when they transfer at Guangzhou South Railway Station, they only need to take the convenient passage to transfer quickly.
It's too late to go to Guangzhou South Railway Station in 20 minutes. When you transfer at Guangzhou South Railway Station, you can take the fast track directly in the station, which can save a lot of trouble, so it only takes 20 minutes, and as long as the vehicle is not late, you can basically complete the transfer.