agricultural produces encouraged by gov policies or external inflation pressure and the stagnant pay they can get in Guang Dong (e.g., 300 RMB one month for the past 10 years despite the inflation), they might conclude that it is worthwhile to stay back in the agricultural sector rather than to work in the cities.
原来供应源源不绝的民工一夜之间消失
--come on, demographical changes will not appear in this fashion. It is due to economic incentive, not demographical changes.
We need to keep in mind that one-child policy has never been strictly enforced outside cities.
