By the age of 20, Bill Gates had started Microsoft.
How many multi-national corporations have you started by 20?
By the age of 20, Joan of Arc was dead a national heroine.
How many nations have you been a national hero of by 20?
By the age of 20, Mozart had finished his piano concerto K271.
How many immortal music masterpiece have you produced by 20?
By the age of 20, Ronaldo was awarded FIFA Player of the Year.
How much international recognition in sports have you received by 20?
By the age of 20, Kang Xi has been the Emperor of Manchu Qing Dynasty for 13 years.
How many nations have you ruled by 20?
By the age of 20, Alexander the Great was proclaimed the King of Macedon and had conquered Athens and Thebes.
How much land have you conquered by 20?
By the age of 20, Thomas Edison started his invention of light bulb.
How many world-changing inventions have you started by 20?
By the age of 20, John Lennon had found the Beatles.
How many world-class music bands have you found by 20?
By the age of 20, Sir Isaac Newton found a general binomial theorem which lead to the later development of calculus.
How many essential mathematical theorems have you found by 20?
By the age of 20, Jet Li had won five national martial arts champions, and had his first film, Shaolin Temple.
How many types of martial arts have you mastered by 20?
By the age of 20, Huo Qubing led an army and defeated the largest-scale Xiongnu army ever.
How many large-scale wars have you won by 20?