C H I N A           The country's economy has hit a wall, ending the longest running boom in history.  Since the   Party embraced western style market economic policies in the late 1970s, China  has doubled the size of  its economy every decade. Some 800 million Chinese have been  lifted out of poverty. But China grew  its gdp at 3 percent last year--dropping from 7.4  percent a decade earlier. It's partly a  consequence of Xi's three-year "zero Covid"  policy. There is a housing bubble in  China, threatening the savings of millions of Chinese  who invested in the real estate  market.            On top of its economic woes, Beijing is contending with a demographi...