Although it's not the first time to refine black armor, Qi Tian is also experienced. But the biggest difference this time is the materials used, because to use the magic chalk dust, we need to use these small things on the refiner, and even distribution, which is a precise control and delicate work.

the biggest difficulty is the amount of magic chalk dust. Qi Tian found that the magic chalk dust can't be put too much. If the amount is increased a little, the magic chalk dust will lose its effect. Through several experiments, although a little magic chalk dust is wasted, Qi Tian also finds a perfect ratio. The...