In 2139, human society is highly technologically advanced. Suspended transportation, smart floor tiles, wristband payment, holographic projection, etc. Have become commonplace. But beneath this modern shell, the inheritance of cultivation continues in secret.
Qi
The most original flowing energy between heaven and earth is invisible, colorless and tasteless. Before the Age of Ending Dharma, Qi traveled along the nine main spiritual veins, nourishing all things and supporting cultivation civilization.
In the Gengchen year (the Qing soldiers entered the pass), someone used a dragon-breaking chisel to nail into the dragon head acupoints of the nine main spiritual veins, and all nine veins were severed. Qi poured out from the fractures and scattered in all directions - those locked into ancestral homes by aristocratic families, those that sank into the deep sea and deserts, those that accumulated at the bottom of deep valleys, and those that were scattered in the streets of the city.
For three hundred years, the world has only thought of the catastrophe of the Dharma End and the depletion of spiritual energy. In fact, Qi has never disappeared, it has just been broken and scattered.