When his body was cut in two by a lorry in 1995, it was little short of a medical miracle that he lived.
It took a team of more than 20 doctors to save his life. Skin was grafted from his head to seal his torso? but the legless Mr Peng was left only 78cm (2ft 6in) tall.
Bed ridden for years, doctors in China had little hope that he would ever be able to live anything like a normal life again.
But recently, he began exercising his arms, building up the strength to carry out everyday chores such as washing his face and brushing his teeth.
Doctors at the China Rehabilitation Research Centre in Beijing found out about Mr Peng's plight late last year and devised a plan to get him up walking again.
They came up with an ingenious way to allow him to walk on his own, creating a sophisticated egg cup-like casing to hold his body with two bionic legs attached to it.
He has been taking his first steps around the centre with the aid of his specially adapted legs and a resized walking frame.
Mr Peng, who has to learn how to walk again, is said to be delighted with the device.