56-year-old man has big shoes to fill

(ECNS) -- Mo Shulin, 56, has been going for walks in his special shoes for 15 years.

Each shoe is tied to 20-cm-high iron blocks weighing more than 70kg.

He came up with the idea 15 years ago when he tied 2.5kg iron blocks to his shoes.

Besides walking in iron shoes, he also skips and dances for physical exercise.