very helpful lecture, I grows up in the countryside, i used to worry about what we will be fed for as i notice more and more people migrating to urban city to work，especially young ones。Now, after having this lecture with reasonable and detail explanation, i can relax finally.
the six time amount agriculture falls from one third to 10 percent of the whole economy。farmers go to city for a better life making the society more prosperous by the invisible hand.
子规zeta
❛‿˂̵✧
子规zeta
,＿ ,､＿,､ ( ( ・ω・) ｀u-｀u-u´
聆_4W
very helpful lecture, I grows up in the countryside, i used to worry about what we will be fed for as i notice more and more people migrating to urban city to work，especially young ones。Now, after having this lecture with reasonable and detail explanation, i can relax finally.
多多姑
教授的语速适中，课程内容也很贴合中国实际！
孙晓玲2018
the six time amount agriculture falls from one third to 10 percent of the whole economy。farmers go to city for a better life making the society more prosperous by the invisible hand.