"Are they the people from the straight passage earlier, they've come over?"
This made Rein immediately realize that the battle from the straight passage before had likely spread to this place.
Thus, without continuing to observe, Rein immediately turned around, dragging the body of the female Blood Curse Naga, and walked towards the row of hanging cages; he planned to first rescue the targets Alyosha and the captured imperial colleagues hanging in the net cages.
As for the bronze doors and the statues, although he was curious, he had no intention of exploring them at this moment.
He was very clear about the mission's objective: to rescue Alyosha. Of course, rescuing the imperial colleagues along the way could possibly improve the mission rating or bring other rewards.
As for why he was dragging the body of the female Naga, that was because Rein intended to ask if it was worth any Merit Points or something of the like.