Answer: Camellias are hardy and need flower protection only when the temperatures drop below freezing. Even then only the opening buds showing color are likely to be damaged. After the cold, the tight buds should continue growth and flower. Plantings are either early, mid-or late-season bloomers.
Beijing Population 2017. The current population of Beijing according to the 2010 census, as reported by the official Chinese Government statistics agency, was 19,612,368. The population at the beginning of 2016, according to some estimates, is 21.7 million.
This is greater than the highest density major urban area today, Dhaka (Bangladesh) at 90,000 per square mile or 35,000 per square kilometer. Today's urban Beijing may have an overall population density one-eighth that of the 1950s.