Sun Wukong reminds the other monkeys that the next king will be the one who manages to find the stream 's source and come out of the waterfall .
He persuades the other monkeys to jump in also , and they make it into their home , it was n't until Sun Wukong reminds them of their declaration that whoever goes through the waterfall , finds the stream 's source and come out again will become their king that they make him their king .
Monkey King