Ma Mingyu was the head of the Chinese State Science Department and a member of the U.N. Security Council who was planted as part of the ambassador entourage invited to Xavier's Jerusalem Habitat. He along with the other member's were greeted by the Stepford Cuckoos and Magneto who took over the task of giving the ambassadors a tour through the various biomes of Krakoa.
As they came to the end of the tour, Sophie read the minds of the delegates and conveyed to Magneto that they were not ambassadors at all but were sent there to spy on the mutants to determine the validity of their new found nation-state and its relationship to humanity.
Mingyu's position along with other figures within the Parliament were eager to agree to Xavier's terms as they saw the political and scientific opportunity that their asymmetry represented.
