One reason for the change, economics. In China, many people care for their elderly relatives, so a single child could end up being financially respons...ible for parents and grandparents. This new policy could help with that. 改革的其中原因之一是经济方面。在中国,很多人都需要照顾上了年岁的长辈亲戚, 所以一个孩子最终可能会对父母和祖父母的财务负责。而新出台的政策就可以在这方面起到作用。 Another reason, China wants to improve human rights by the universal two-child policy. 另一个原因是中国希望通过全面二胎政策来改善人权。