Wandering around Asia, you are more than likely to find yourself at the foot steps of a Chinese Temple.
Without getting too in depth or religious this article will attempt to give a brief introduction of Chinese Temples and what you should expect upon entering.At the prayer hall you will find a box containing incense sticks. According to the box, “after donation, [you should] take 4 joss sticks.” At other temples you may find that instead of asking for donations, there are vendors that sell them for a minimal fee.
source: http://www.goodfoodandtravel.com/guide-to-chinese-temples