Zhang Tiesheng is from Xingcheng County, Liaoning Province. 18 years old responded to the call to jump the queue to go to the countryside and become an educated youth. Thanks to his hard work, Zhang Tie-shan soon became the captain of the commune. Because Zhang Tie-shan was a good man and received some education, the commune recommended him. When the 1973 exam came, he became a candidate.

On the day of the exam, Zhang Tie-shan found a problem, because these topics seemed simple, but unfortunately he couldn't, especially in the physical chemistry exam. He found that most of them didn't work, so he filled in all the blanks, but he felt that it didn't work either, so he simply stopped writing. He wrote a letter to a respected leader directly behind the test paper, and the result was unexpected.

After the results came out, Zhang Tie-shan scored 38 points in Chinese, 6 1 in mathematics and 6 points in physical chemistry. Does it look miserable? However, the letter he wrote on the back of the paper gave people a completely different feeling. At that time, Liaoning Daily also published a letter from Zhang Tiesheng with the title "A Thought-provoking Answer Sheet", and Zhang Tiesheng became a national celebrity.

After becoming famous, Zhang Tie-shan was admitted to Tieling Agricultural College. It can be said that a blank sheet of paper changed Zhang Tie-shan's fate, and later he was called a "horned stone". It was supposed to be an exam, but Zhang Tie-shan wrote a letter in a different way, but the result was unexpected. It can be seen that Zhang Tie-shan is very clever. Later, he started a feed factory in partnership with several friends. The company grew bigger and bigger, and Zhang Tie-shan's worth doubled.