度日如年 dù rì rú nián Time seems to pass very slowly 十年树木,百年树人shí nián shù mù, bǎi nián shù rén Studying may be slow and arduous but is worth it 笑一笑,十年少xiào yī xiào, shí nián shào Happiness is the best cosmetic 学好三年,学坏三天xué hǎo sān nián, xué huài sān tiān Falling into bad ways is far easier than keeping to the good
Along with porcelain and tea, silk is one of China's important innovations. Just like other great inventions the secret was closely guarded for centuries. Fabulous fine cloth was an important export as far back as the early Roman Empire.
As a considerable proportion of China is swathed in toxic smog planners are considering how to combat the problem. One proposed solution is to move people and businesses away from the suburbs of Beijing into outlying districts. The move would give people shorter commutes and lower the density of people in polluted areas. In the last 18 years energy consumption has doubled and the number of cars tripled (Oh for the Halcyon days of bicycles)! The long term plan is for Beijing's population to be capped at 23 million.