I often eat at a Sikh temple here in Hong Kong,because the indian vegetarian food is delicious and free to all who choose to visit.

http://www.realsikhism.com/index.php?subaction=showfull&id=1248364871&ucat=7

The men all have big beards mostly,when asked I was told cutting hair is not allowed. Now that might be something to do with their faith....I find the pigtail fashion trend absurd,not to mention perhaps very hot and sticky in a humid chinese summer?