Shenzhen recorded the largest increase in permanent residents among Chinese cities in 2025, a rare bright spot as some megacities lose their appeal amid a deepening demographic shift.The southern tech hub added 259,000 permanent residents last year, bringing its total population to 18.25 million, according to a notice released by the local government on Monday.Designated as China’s first special economic zone in 1980, Shenzhen has since evolved into one of the country’s most powerful...