Real-estate surge eclipses the one in U.S. housing in the 2000s; desperate buyers undeterred by Covid pandemic. Even the coronavirus hasn’t stopped the world’s biggest asset bubble from getting bigger. After a brief pause during coronavirus lockdowns in February, a Chinese property boom in some megacities that many thought was unsustainable has resumed its relentless upward climb, with prices rising higher and investors chasing deals despite millions of job losses and other economic problems.