Airin saw that a big black snake crossed the river so it immediately threw itself into the river and followed where the snake went.
The sky is very dark tonight but the moonlight makes the black snake's figure shine so that Airin can follow it but the snake suddenly turns around, Airin quickly drowns her body.
From the water, Airin saw the snake return to its original path, meaning that the snake realized that it had been followed before, so Airin became increasingly suspicious and finally chose to follow the snake from the water.
The snake swims very fast but Airin is no less fast, she can even breathe very well even though she is in the water.
I don't know how far she swam but Airin didn't feel tired, she kept following where the snake was moving and finally the snake slithered to the river bank.
Airin waited for a while before finally coming to the surface and how surprised she was that she was in the Etona kingdom.