Another dangerous hiking trail on Mount Huashan

In my opinion this is insanity. This insanity helped people reach on the top of the Everest. This is really adventurous as well as horrible. Common people can never think about this type of trekking. But some of us have real guts to achieve this type of job.  But the people shown trekking in this video were very happy and the most important thing is that they are not feared of altitude.