She felt that what Shen Xi said made too much sense, yet she still replied, "It's all my fault for being so useless, you don't need to comfort me like this."
Shen Xi slightly shook his head, "I'm telling the truth, and our research has found that the more powerful the superpower, the more difficult it is to upgrade." This statement wasn't a lie, for indeed, the greater the superpower, the more challenging the upgrade process becomes. However, if one's talent is good, then the difficulty of upgrading is greatly reduced.
Shen Xi intentionally only mentioned one aspect, intending to put Lin Feiyin at ease. In reality, both he and Zheng Tianhe had begun to suspect that Lin Feiyin's talent was not high. Yet the question was, how could she have developed the purification ability if her talent was not good?