Fantasy Cultivation in the City Chapter

Humans have three treasures: spirit, energy and essence. Those who clearly understand the Tao, control their bodies, and nourish their bodies with essence are called those who burn essence; Those who refine and transform Qi and then use Qi to nourish the body are called Qi people; Those who refine qi and transform it into gods, and then use the gods to nourish their bodies, are called those who burn the gods. Only when the heavenly gate opens automatically can one reach heaven and earth and travel to all heavens.