Mr.Alan Hodges, you can leally reside in China permanently, married with a Chinese citizen doesn't mean that you are automatically entitled to live in China. You have a get a valid China visa to enter China. If you don't find a job in China, you can first apply for multiple-entry L visa for family visit because your wife is Chinese, then go to China and find a job, then get a work visa, change it into temporary residence permit (generally valid for 1 year) after entering China with work visa.