I rode bus K138 and then took route 13 city bus. The driver of K138, a handsome guy, was super nice on both ways I encountered him.
How to go how to return then, metro and bus are very convenient
6:30 tour ends, many taxis available, taking a taxi is very convenient. However, we took a charter car going and coming back, staying in urban area, it’s still quite convenient for us.
Most convenient and direct car, otherwise zoo has a special bus to the subway station, then you can transfer from there; buses are not very frequent in the evening, so it’s still quite fast.
Go to the zoo parking lot, 48 currencies can choose your desired destination.
I’m sorry you also booked the Sofitel in Santoni, it’s best not to go to the night animal park as it is too meaningless. Returning with Grab will be much cheaper for a ride back overall.
Let’s take a direct taxi instead, changing buses is too troublesome.
To take public transportation to the subway station, and then transfer to Santao.
Take the bus 138 and go to Springfield station, then take MRT.
Very convenient. Taking the subway back to the city from here, running times of buses and subways are almost identical until 12 midnight.
Riding a taxi is the most convenient. Many taxis are waiting in line though
Currently, the public transportation hub is under construction, with only a few options: bus (peak-hour queue), taxi (not good at night), and rental car counter to hail a ride (with cars available).
I took bus 138 and then got on route 13, the driver of 138 was a handsome man who did an excellent job both ways.
How to go back, many convenient subway and bus routes
21:30, the tour ended and there are many taxis, taking a ride is quite convenient. However, we’re going with a private car and returning to private car, staying in downtown area, it’s still very convenient.
Most convenient and direct ride-hailing, otherwise there’s a dedicated bus for the zoo that goes directly to the subway station, then you can transfer and it’ll be fine. The evening buses don’t stop frequently anyway, so it still moves quite fast.
Go to the zoo parking lot and choose a destination for 48 dollars.
I’m so sorry you also booked Sofitel in Sanya, and it’s best not to go to the nighttime zoo for too much meaningless. When returning, take a Grab car that will be much cheaper.

Note: “很遗憾” has multiple possible English translations depending on context, but I interpreted it as “I’m so sorry”.
Let’s take a direct taxi, changing is too much trouble.
Take the bus to the subway station, then transfer to Sandao Sha.
Take the bus 138 to Spring Leaf Station. Ti is an MRT station.
Very convenient. The bus and subway routes return to the city center. The running time of the bus and subway is almost the same, stopping around 12 midnight.
Riding a taxi is most convenient. Many taxis are queued up, oh!
Currently, the public transportation hub is under construction, with only a few choices available. Public buses (bus queues during peak hours), taxis (not very convenient to hail at night), and the rental car desk for booking a ride (with cars available).