I think you should ask your sister a little more of what happened and why he did it. Then you should go find the boy and perhaps talk to his parents cause it's not right for him to do that.
Answer: China was named by Zhonghua Renmin Gong He Guo
Under the Ming, China was the 'Great Ming,' under the Qing, China was the 'Great Qing,' and so on. Yet on unofficial documents, the name 'Zhongguo' lived on. The full given name of China today is 'Zhonghua Renmin Gong He Guo,' or People's Republic of China
An example of a command economy is like the Soviet Union North Korea and Cuba