C50 Decline

This thing was actually just a Spirit Strengthening Grass that could solidify Jindan.

The Core Strengthening Grass could harden Cultivator of the Golden Core Period's Jindan and make it unbreakable.

A cultivator whose Aurous Core was solidified was several times stronger than the average cultivator, Cultivator of the Golden Core Period.

However, because the Jindan was solidified