A generation ago, the route to success in China was to work hard, get married and have children. The country’s authoritarianism was seen as a fair trade-off as millions were lifted out of poverty. But with employees working longer hours and housing prices rising faster than incomes, many young Chinese fear they will be the first generation not to do better than their parents. They are now defying the country’s long-held prosperity narrative by refusing to participate in it. Mr. Luo’s blog post was removed by censors, who saw it as affront to Beijing’s economic ambitions. Mentions of “lying flat” — tangping, as it’s known in Mandarin — are heavily restricted on the Chinese internet. An official counternarrative has also emerged, encouraging young people to work hard for the sake of the country’s future.