The correct answer to this open question is the following.
I feel this peace that was achieved by the Pax Mongolica was first based on fear and later turned to be a true belief in the Mongol Empire. This means that at first, people feared the Mongols for all the terrible reputation they had gained through the years for their violent attacks and invasions. Then people expressed their loyalty to the Mongols not really as a result of true love, but probably respect. because with Mongol's character, the fear of death or punishment always was present.
The Pax Mongolica was a time of relative peace in the region when people felt more confident to establish commerce again, started to travel again and trade with other nations. It was a time from the 13th to the 14th century in which that region lived in times of peace and certain economic and political stability.