Tero, who had a strong military background, nodded thoughtfully after his praises for the goddess, and said, "The positions of those two cities are still fresh in my mind. Given that the Golden Glitter River flows through them, it's not surprising that the people there can hold on until this day."
His guess was indeed correct. The Golden Glitter River tributary that Motan mentioned was the main reason why the Twin Cities, which theoretically should not have been possible to save, have been able to persist in the midst of the horde of corpses.
"Golden Glitter" and "Silver Stream" are the most famous rivers in the continent of innocence. Here is how they are recorded in common education-