I Learned Secretly at the Temple and Accidentally Maxed Out My Skills

Ye Sibai accidentally entered the cave, gained A-level powers, and was recruited by the Land Temple Management Bureau. What? ! Are there various temples on Blue Star? Ye Sibai kept traveling through the temple to obtain energy cores, but found that everything was not simple... The lost civilization connected to the temple seems to be recovering. (Rules + upgrade flow + unlimited flow + no heroine + growth type)