Hey there Don... I am an American and I've lived in Kunming, off and on, for the past six years and love it here. But I feel I should alert you to a problem you, and especially your wonderful wife, will confront if you move to Kunming. This is the prejudice most Chinese have toward the Japanese. I love Japan and the Japanese. I have lived in Koyoto, and my two sons were taught gymnastics seven days a week by a fantastic friend of mine, Mitsuo Mori, for years. One of my sons became the youngest gymnast to ever get on the U.S. Junior Olympic team. Living in Los Angeles, and teaching at UCLA, I always had many Japanese friends. So I was shocked when I first came to China. I lived in Yuxi then, and I saw graphic videos of the Japanese killing Chinese in Shanghai during the second world war being shown, all day long, on the bus. Amazing!
Japan is one of China's top trading partners yet the indoctrination is still going on. The government here, adds exorbitant taxes on to the prices of Japanese products imported into China. I just checked the price of a Sony laptop, and the best price I could get using my Chinese tech friend's inside connections, is double what it would cost, right now in L.A., retail.
I have never been able to open the minds of my Chinese friends, and even my Chinese wife, on this subject. There were Japanese living in and developing Shanghai for a hundred years before all those horrors arose when their property was confiscated by the Chinese and the Japanese retaliated.
So my advice, I'm sorry to say, is forget China. There are lots of other wonderful places out there to consider... Belize and Malta come quickly to my mind.