Sylvanas' bribe wasn't successful, as her bribe of one million Renminbi was too high to be believable.
The members of the Pioneer Alliance started attacking the Stronghold that was holding Sylvanas.
Sylvanas heard the explosions and occasional footsteps outside.
As the Stronghold was far from the Revival Point in Eternal Kingdom, the members of Changan City weren't able to replenish their dead members.
If the members were killed in battle, there was no chance of rejoining the battle since they had to pass through the Sighing Wilderness and walk through a long tunnel. If they didn't travel in a group, they could be killed by Underground Spiders and Dire Wolves.
This was advantageous to the members of the Pioneer Alliance.
At the forest Stronghold, as the Revival Point was nearby and the way to the Stronghold was relatively safe, both Changan City and the Pioneer Alliance were able to replenish their dead members quickly.
