ali mohammad sadeghi, an expert on former chinese issues. this issue is staring at the door colon, what changes have happened in china's population policy in recent years, which you almost mentioned, i used to apply about 40 years to one child to prevent overpopulation, and according to the estimate, during these 40 years until 2010 , there were about 400 million. 400 births of 400 million people have been prevented. in order to continue their economic development and the production they had , they started making changes in the one -child policy from 2010 onwards. i have and also other ethnic capabilities that i could have a child with the help of flowers, two people, three people, the increase of the elderly, which reduces the production workforce, and the maintenance of the elderly would put high costs on the government, about one billion four hundred. why is this issue so important? there are various factors in china's labor force is abundant and cheap, so if you count how many percent of them retired above the age of 60 , they are under