Mainland China's once-per-decade census has been released, showing overall population growth despite demographers stating China’s population is likely to start shrinking in the next few years. The SCMP’s Mimi Lau examines the sensitivities behind the numbers that will shape China’s future policies. Sidney Leng speaks about census methodology, Zhou Xin weighs in on what the census numbers tell us about changes in various segments of China’s population and Qin Chen talks about how the daughters…