Although the Great Emperor's army couldn't enter the Forbidden Land in its entirety, they could still harass the borders. Doing so would surely force the Fire Emperor to deploy a large number of poison creatures and fairies for defense, creating a period of extreme vulnerability inside.
At such a time, it would be possible to rescue the fairies imprisoned within the Forbidden Land.
"It seems we are truly on the verge of ending this painful existence."
Hong Yan hadn't expected such rapid progress. Though the name of the Great Emperor wasn't particularly good, it remained foreign and untrustworthy to the fairies.
If she hadn't been pushed to the brink, Hong Yan wouldn't have approached Xie Jin, nor would she have considered asking the Great Emperor for their rescue.
Honestly, Hong Yan had prepared herself for death. If the Great Emperor found out and chose not to help, they would likely be swiftly eliminated—such was the fate they seemed destined for.