C1840 Mass Refinement

"However, the biggest problem is that it's very difficult to arrange a high level Artifact Refining Array, and it takes a long time to refine the materials."

The result of the new idea was very good, but it was facing a real problem.

Time.

Lee Yifann had previously used the grade six Artifact Refining Array to refine the Heaven Earth Dark Copper. After spending seven days