Santa whooshed over and grabbed the iron ring with one hand: "Old Husband just can't believe..." After all, he was the quickest man on the scene, nobody else could outpace him. The iron gate, under Santa's effort, made a booming noise and it was pulled open indeed!
Santa stood at the door blankly for a moment. It was truly opened! Sun Bertram looked somewhat complacent, thankfully, his prowess remained undiminished.
He pushed Santa aside: "Would you come inside or not? If not, please don't block the way. I will go first."
Behind the door was indeed an isolated void, taking the shape of an egg as a whole, wrapped in a layer of semi-transparent blue power. Through this barrier, they could see various streams constantly flowing in the void. Sometimes it resembled a Great River, sometimes a rapid current, and sometimes it suddenly fell into utter tranquility.
