Chinese luck knots and luck coins... I've had a random coin for a few years now and knew nothing about, I've lost it many times but somehow it would come back... I deemed it lucky looks like I was right
Chinese numbers in Mandarin pinyin and hand gestures. This is how one could show different numbers with one's hands in Chinese culture - I used to know all of these when I was little, but have a hard time remembering past 6 now.