Chinese people have an obsession with the number 8. When spoken in Chinese, 8 phonetically sounds like the word for good fortune. So 8, 88, 888...you get the idea. The more 8's the better. There are also variations of this as well. 28 equates to good fortune coming easy. 168 equates to continuously having good fortune. On the flip side, 58 is bad. It means lack of good fortune.
Feel free to look up the #4 and what it means to Chinese people too.
Edit: If anyone has 8, 88, or 888, hit me up! (Yes, I'm Chinese.)