Dubbed "rocket boy", Yan Hongsen, primary school student from Shaoxing, Zhejiang province, (invite) to teach his whole school about space science at the opening ceremony of the new school term.
The 9-year-old boy won national fame after(point) out factual errors in a planetarium documentary（天文馆纪录片）is now giving astronomy lessons to his schoolmates.
Yan(be) a space science fan since he was just 4 years old and makes cardboard rocket models and teaches online classes to other(love). He became(interest) in space science, then fell in love with astronomy and military affairs.
After the short video about him was(wide) spread, this smart boy is well known all over China. Many schools including his own invited him to give lessons. His(pride) father posted the boy's "job offer" when Yan was made "Aerospace Junior Lecturer" by his school who sets an exampleall the teenagers.
