People come from all corners of the globe to study kung fu, but has the martial art been subverted by big business?

In the ancient mountain fastness of Shaolin Temple, behind the closed doors of a Buddhist sanctum, Abbot Shi Yongxin holds court from a lacquered wooden chair carved with dragons.

At his left hand, a trio of warrior monks stands attentively, 1,500 years worth of secret skills and kung fu technique trained into their loose limbs.