- Demo: http://mydeershujun.tk or http://yangzhixuan.github.com
- Inspired by: http://love.hackerzhou.me and http://www.openrise.com/lab/FlowerPower/
- This is also available in github: https://github.com/yangzhixuan/valentinesday
- The heart equation was Shujun's gift to me for my 17th birthday.