Mo Fei thought it was a good thing that Gul'dan was single-mindedly attacking Dalaran. Otherwise, if he were allowed to develop for a few more years, he might really turn the Eastern Continent into an Undead world.
Fortunately, real decisive battles often occur between the high-end forces of both sides. It's one thing to increase your presence with hordes of skeletons and zombies, but it's impractical to rely on them to flatten Dalaran.
At this time, the previously marginalized Invincible Sand Sculpture finally got a chance to speak up.
Invincible Sand Sculpture (The South Seas King): "Don't worry, I've already ordered a scorched earth policy in the Kingdom of The South Seas. We've relocated most of the population from our lands, so the Scourge will not be able to gather more soldiers from my territories."
Mo Fei thought to himself that your Kingdom of The South Seas doesn't have much population to begin with.