In much of the world, marriage is in decline; the proportion of married American adults has dropped to 51 percent, the lowest ever recorded. But in China, even as rates of divorce have climbed, so much of the culture revolves around family and offspring that 98 percent of the female population eventually marries—one of the highest levels in the world. (China has neither civil unions nor laws against discrimination, and it remains a very hard place to be gay.)

