As Master Yan said, the Northern Territory and the Southwest belong to regions that are hard to classify as either strong or weak.
The Southeast and Northeast are strong primarily because they have a relatively unified voice, such as the Daoist Sect in the Southeast and the Buddhist Sect in the Northeast, which can genuinely set aside prejudices and work together when necessary.
But it's different for the Northern Territory and Southwest. The Northern Territory's three main factions remain isolated: the Yan Sect, Zhao Sect, and Heartless Dao. Their endless entanglements mean they've never formed a united front. The various sects underneath them are similarly entangled in complex relationships, and that's why the Grassland manages to survive under such conditions. Thus, their ability to deal with the Mountain Demon of the Yuan Yi Mountain Range hinges on their ability to unite.
