Dragon Ball Where did the Monkey King and Shenlong go at last? Why did the one-star dragon's attack on Wukong when collecting gas bombs be ineffective?

I think it is to let people know that the world can't be protected by one person, but needs everyone's joint efforts. The dragon carrying Wukong should have flown to the sun, and the dragon died, but the dragon balls gathered in Wukong to make Wukong live forever, but everyone thought Wukong was dead.

As for why the one-star dragon's attack is ineffective against Wukong, I think it should be because Wukong embodies the vitality of the whole universe, which is the power of all things in the universe to overcome evil, which is what we call lofty righteousness. Since ancient times, evil has been invincible. One-star dragon, as a representative of evil, is naturally insignificant in the face of justice in the whole universe.