246. Kidnap People

The spine is divided, from top to bottom, into the cervical spine, thoracic vertebrae, lumbar, sacrum, and tailbone.

During the Marrow Cleansing, they emphasize "all in one go," demanding that Cultivators cleanse all five sections with their inner breath every day.

For the human body's various tissues and organs all follow the natural law of "use it or lose it."

Without exercise or cleansing, function naturally diminishes.

Therefore, to cultivate, one must work on the entire root at once, at least once a day, continuing for about half a month to advance to the Blood Exchange.

This is a great test for Cultivators, requiring a robust physique to generate sufficient inner breath.

They also need to be cautious and meticulous, as if walking blindfolded on a narrow plank over a deep abyss.

A force of fifty to sixty thousand kilograms in the Blood Exchange Realm, strong enough to withstand rifle bullets, is a power bought with life itself.