A super-fit septuagenarian in China has been putting on a display of his strength and agility.br br Zhang Zhuofum from Xuchang in the eastern part of the country, can perform two-finger push-ups, lifting his body weight using only his thumbs and index fingers.br br “I’ve never seen it before. It’s astounding. He is 79 years old. I would never have believed it if I had not seen it with my own eyes,” said one impressed resident.