The Myriad Monarch Sect's most elite talents were gathering at one location, with a few exceptions. They were all enthralled and excited, having made ample preparations to explore the unknown realm beyond the Gateway Door. Many of them weren't even aware of its existence, only finding out after the Grand Spirit Trials that they would be given a spot to adventure out.
Some paled, giving up their spots to others for resources or connextions. Others roared in excitement, ready to venture out into the unknown and test their mettle against whatever obstacle that comes. With the restriction set of three hundred years, this meant whatever came would be within their manageable limits. At least, this was the held belief of many elites.