China is stepping into the becoming an aging society.

Nowadays, with the aging society coming/with a fast-growing/ever-growing aging society, the one-child generation has faced great preasure pressure on work and life in China. The Chinese government has started (adjusting) to adjust the the family planning policy and to allow some families to foster (do you mean 'raise'? 'Foster' is more like 'adopt' or 'take in') a second child under certain conditions/special circumstances. However, according to the a survey, many couples abundant fostering abandon the idea of raising/do not want to raise a second child due to the increasing economic stress. Therefore, the government can't rely on the birthrate of birth to solve the aging problem basically/as a natural solution for the problem of an aging population.The best solution is to establish an effective social security system.

Good job!