欧区一欧区二欧区三

As for the qualitative change, there is no introduction. However, it has written some materials that can assist Tianyun's Twin Wings in advancing, and even how these materials are refined into Tianyun's Twin Wings is described in detail. After reading the jade slips, Ning Cheng already knew how to use the Wushou Silver Wings to advance to Tianyun Double Wings....