I find the meals passable, but not great. I actually just flew LAX-PVG this morning (currently in Shanghai on a layover to BKK) and dinner was mapo tofu rice or chicken noodles, while breakfast was an omelette or noodles and dim sum.

I agree that you need to be attuned to a Chinese palette to appreciate MU's catering (and on this flight, they actually said they serve Chinese food), but I've seen improvement in the last three years I've flown them and there's definitely worse catering than MU's.