Why did the Monkey King turn around to see the sea?

The Monkey King's expression pack with his back to the sea means that he is going to learn from a teacher. At that time, it was called Monkey King before it was called Monkey King. The Monkey King bid farewell to the monkeys, rowed a raft across the eastern sea, and finally came to Bodhi Cave House. The Monkey King was sincere and insisted on being a disciple of Bodhi. Seeing sincerity, Bodhi agreed to accept him as an apprentice.