What is she trying to do?

Sure enough, Rean and Roan returned to the City Guards' headquarters, completely ignoring whatever the other countries intended. They weren't 100% sure that the other countries were aiming at them, but it didn't matter if they weren't either. It was, as Rean mentioned. They would need to come knocking on their door whether they wanted to or not.

The reason was simple. Rean and Roan had way too many Existence Pearls after intervening in hundreds of battles between cultivators. For example, Liana had 27 pearls after an entire week. The number of cultivators diminished, and the pearls each cultivator carried increased. However, it still wasn't enough to beat Roan's numbers if all of them were gathered.