China introduced  its so-called one-child policy  in the late 1970s. It's been believed to help control China's population growth . It's also been against for forcing  parents to make difficult personal choices , or in some cases  face huge fines . The policy said that in big cities or towns, parents could only have one child, although  there were some exceptions , for example, the famous director Zhang Yimou, who was ordered to pay the heavy fines for his three children. The new rule  says that if either parent  is an only child, then they are able to have two children of their own. One reason for the change is economics . In China, many people care for their elderly relatives, so a single  child could not afford  to look after his parents and grandparents. This new policy could help with that. Another reason, China says it wants to improve human rights . Which of the following is not true?
China is the world's most populated country. The one-child policy did help control China's population growth. All the families in big cities only have one child. There is a change to China's population policy.