It took 508 days for three friends to complete the first trek along the entire length of the ancient structure, well over 8000 kms. They began in May 1984 and finally reached their destination at the Jiayu Pass on September 24th 1985, having documented the condition of the wall every step of the way. The three men became national heroes as the press followed their progress. Yaohui Dong spoke to Rebecca Kesby in 2017 about what inspired him to make the journey.
This programme is a rebroadcast.
(PHOTO: Yaohui Dong, Wu Deyu and Zhang Yuanhua. Courtesy of Yaohui Dong)