<p> <br /> The shortest man in the world able to walk has died in Rome at the age of 21, according to Britain's Guinness World Records.<br /> </p><br /> <p> <br /> He Pingping stood two feet and five inches tall and weighed seven kilograms. He died after being admitted to hospital in the Italian capital with chest pains.<br /> </p><br /> <p> <br /> From a small village in North China's Inner Mongolia Autonomous Region, He became quite a celebrity after he was crowned the world's shortest man by Guinness in 2008.<br /> </p><br /> <p> <br /> Despite his height, He became a chain smoker when he was seven years old and smoked at least one pack of cigarettes every day.<br /> </p><br /> <p> <br /> He weighed 1.1 pounds after birth, and stopped growing after he turned 18. As he was so small, his parents named him Pingping, meaning "wine bottle" in English.<br /> </p>