245. Refining the Spine

The next morning, as the sun rose,

cells that had absorbed True Qi during the night's rest became robust.

Lu Li didn't need to perform a physical test to confirm that his body had significantly strengthened.

He went to the courtyard and kicked a small pebble into the sky.

Immediately after, he maneuvered the "Qing Shuang" sword, styled like a Tang Sword, releasing a ring of air waves that howled and shattered the stone in mid-air.

The speed was over 380 meters per second, originally only 350, an increase of 10%.

This was the strong physical body enhancing the spirit, resulting in greater explosive power.

However, this was just the beginning, the next step of refining the spine was crucial.

Even the previous Marrow Cleansing was just laying the foundation for this step.

This was the last and most dangerous step of the Marrow Cleansing Realm.

Involving the central nervous system, even with "Internal Vision," there was no room for slight negligence.