In Ruby, what happens to make the sun harshly bright?

Question

Where do I go, and what do I have to do after beating the Psychic Twin Gym to get me to where I face Groudon ?

Answer 1

Check this video. ( https://www.youtube.com/watch?v=G9JwLA97LWM )
This is a Youtube video showing what to do after the Psychic Gym.

Hope this helps!