Second Tribulation, Essence-Refining Human Immortal

Several days passed within the quiet chamber.

Fang Shu silently nurtured the qi and blood within his body. Under his guidance, the potent medicinal power continuously merged into his flesh, seeping deep into his bones.

Suddenly, the muscles and sinews all over his body trembled sharply, crackling and popping.

Fang Shu abruptly opened his eyes, immediately sensing that the qi and blood throughout his body had become more active than ever before.

When he looked up at the sky again, it happened to be midnight, with the moon at its zenith.

And on the Dao Register in his mind, the words in the realm column had changed to:

[Can undergo tribulation (ninety-nine percent)]

Just as he had expected, after thoroughly tempering his qi and blood, aided by the dense spiritual qi and medicinal power within him, his chances of successfully crossing this tribulation had risen to nearly one hundred percent.

Thus, Fang Shu hesitated no longer. His body shifted, darting swiftly around the bottom of the well.

Rumble, rumble!

A large vat shook violently at the bottom of the well in response to his movements.

The vat was filled sixty percent full with mercury. It churned ceaselessly into a vortex, producing a sound like wind and thunder.

For this marrow-refining tribulation, Fang Shu was not using the Venom Pit tribulation method from last time. Instead, he chiefly employed the marrow-refining technique recorded in the Lead Method.

Unlike the Insect Method, which refined the marrow with poison over the accumulation of days and months after entering the Dao, the Lead Method required one to drink mercury into the body during tribulation, sending it directly into the bone marrow.

The very sound of such a method was terrifying. Ordinary people would die upon contact with it; even ordinary immortals could