C1764 The Problem of Sharp Swords
In the mansion, Han Zhen organized some stuff.
Including the pills, and the Milky Way galactic sand.
The Milky Way galactic sand was the best material used to refine Flying Sword, Han Zhen needed to find the appropriate earth fire energy as soon as possible and refine it into Flying Sword.
The Milky Way galactic sand was also Han Zhen's material for using it as his own Flying Sword