This place was converted into a Chinese restaurant after what seems like the building owners being unable to lease out more of its food court stalls. The hot and steamed dishes here are good. Chicken feet actually stood out to me as very good. As for the other dishes, you should only take if fresh. Some items have been sitting out for a while, and you can't tell until it's already on your table and you dig your chopsticks into cold or stale food. That is one of my biggest turn-offs at dim sum places. They also need more carts going around when busy. Ask for hot mustard to mix with the chili oil, soy sauce, and vinegar.
For Phoenix dim sum, my latest ranking from best to worst is Great Wall, Phoenix Palace, Mekong, then China King. I'd go here if people didn't want to drive down to Chandler or out west to Great Wall.