Go to the end of the power station. There is a red button on the ground. Just tap it. Go back and press the buttons. Each time you press a button, a door opens or closes. Sorry, I have to figure that out for myself. Here is my gaming experience as compensation:
There are mythical beasts in the powerhouse: Lightning Bird Steel Divine Pillar and Thunder God; lv50. The lightning bird has a high probability, preventing it from moving at high speed (sharp needle; evil face); the god of thunder prevents the roar; (If you are a computer gamer, use real-time save)
I have caught all the mythical beasts above. I'm an old gamer and have played it countless times.
Oh, I found a moving URL: http://v.youku.com/v_playlist/f3624339o1p0.html