Use the portal at Sparkrocket Outpost to meet with Kaelis Sunsoar at the Ruins of Ogudei in Krasarang Wilds.
The fools in the Explorers' League have excavated an ancient mogu ruin to the northeast. And - of course - in their bumbling, they've disturbed the mogu spirits within.
We are going to take advantage of their ineptitude. Take this portal and meet with Kaelis Sunsoar, my contact within the ruins.