http://news.wenxuecity.com/messages/200804/news-gb2312-556727.html

1/ They are policemen, not army；

2/ From 01/01/2005, all the police had changed their decorations and logos on their uniforms

3/ From 13/10/2004, all the Chinese ‘pusse-pusse’ had changed unanimously the curtain with the traditional blue, red and green colors, while not the blue ones your can see in the picture.

Finally, I found where it came from this picture which could bring big imagination:

During a shooting of a film, the polices are hired for playing monks in the film.