C1460 Fourth Rank Gene Lock

"This isn't an issue at all. Typically, there are two main reasons why ordinary Battle Spiritualists can't advance to Fourth Rank Origin Martial Cultivators. The primary reason is the lack of a suitable Fourth Rank evolution elixir, but that's not a concern for me," Feng Yixiu said with a self-assured smile.

"And the second reason?" Han Xiao inquired with a hint of curiosity