Promotion to become king of the ring, there are many places that need to be absorbed, consolidated and adjusted.

For example, the seventh floor of the nine-day fire dance, which needs to be retrained. Of course, the fire dance on the sixth floor can be continued for nine days. But that's going to be a big discount in power. This practice takes time.

There is also the seventh layer of the changeable dragon, which also needs to be practiced. This kind of secret technology which enhances in turn enjoys great benefits. And every level should be re-practiced, which is a general shortcoming of the existence of it!

In addition to...