C1544 Consistent externalization

This time, Chu Yun once again invited many alchemist grandmasters to come concoct pills.

However, this was not a medicine to increase physical strength. Instead, it was a medicine that could calm one's mind and help them gain insights.

Some spirit medicines had this sort of effect.

Chu Yun wanted to do his best to comprehend the Great Development Sword Technique in the following period of time