Xing Na is the daughter of a farmer. She liked farming and would have probably be happy marrying a boy from her village and being a farmer also. But early on in her government run school and in her "Young Pioneers club, her teachers noticed how outstanding her scores in math and science were. They decided to place her into a school for future scientists. She was scared to live far away from her family, but proud that she would be able to work for her country as a scientist someday. What type of economic system is Xing Na living under?