It's important to know that these two Half-Immortal Plants have been stuck at Peak Level Twelve for a very, very long time. Wu Dao joined the Immortal Palace perhaps only ten to twenty thousand years ago, and has been stuck at Peak Level Twelve, probably just for a few thousand years. But Emperor Xiu, he's an ancient monster who has lived for countless tens of thousands of years, not even detailed in the records left by past Demon Lords in the Real Demon Palace. All that's known is that when recorded, he was already a Peak Level Twelve Half-Immortal Plant.
For a Half-Immortal Plant like this, the chances of advancing are inherently low, unless there's an extraordinary opportunity.
If one plant found an opportunity and happened to advance to Level Thirteen at this critical moment, it could still be said that he was extremely fortunate. But for two to advance to Level Thirteen simultaneously... Not only did it truly happen, just imagining it seems an unbelievable thing.
Suddenly.
