C240 Alchemical Room

Compared to purifying the herbs, Long Tianhao was much easier to purify the minerals. At least everything was progressing smoothly, and Long Tianhao could refine one piece of metal every half an hour, or even faster.

After all, as long as Long Tianhao used his full strength, he would be able to complete the refinement of twenty pieces of metal by nightfall. At the same time, after a long time