The original void of bamboo can accommodate all things. This "empty" is not nothingness, but a realm of hidden tribulations and refining the Tao.
1. Follow the Way of Heaven
The first level: Qi-inducing realm (first glimpse of the immortal way)
Subdivision: Qi sense → channeling → body quenching
...
2. Seize luck against the will of heaven
The first level: the realm of attracting souls (first exposure to Yin evil)
Subdivision: soul sense → seed birth → soul nourishment
...
