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The back and forth, exhausting the lives of NPCs of various races to continue the fight, lasted a month and a half, until heroes and leaders arrived and joined the fray, slaughtering the Demons near The Gate of Other World. Only then did they secure a foothold nearby and a steady stream of troops began to pass through The Gate of Other World to establish bases.
With the bases established, the Expeditionary Army reputation system kicked in, and the first batch of thousands of players, all over Level 50, entered. They unanimously chose to grind reputation at the Expedition Base, and even Lin Xiao was no exception.
The reason was simple, after the Outland was opened, the Fortress system was made available, allowing any player who raised their Gaia reputation to Respected and their Expeditionary Army reputation to Revered to qualify for building their own Fortress, recruiting and training NPC soldiers through the expenditure of reputation and Demon Marks.