If Bo Ren had crossed over to before the Swift Wind, he might have used the following methods to face Naruto when he was young: 1. Pretend to be young: Bo Ren may deliberately act as a young boy and face Naruto in a cute way to attract Naruto's attention. 2. Escaping: Bo Ren may choose to escape and not be willing to face Naruto when he was young. He might hide in a corner or run somewhere else to avoid contact with Naruto. 3. Provoke: Bo Ren may deliberately provoke Naruto as a child in an attempt to attract his attention or test his attitude. He might say something interesting or do something strange to amuse Naruto. 4. Cooperation: Bo Ren may also choose to cooperate with Naruto when he was young to solve problems or complete missions. He might try to communicate with Naruto in different ways to better understand his thoughts and behavior.