Board Thread:General Discussion/@comment-125.212.121.162-20131114005816/@comment-182.18.223.68-20131120021610

It's also possible that Ruby is an illegitimate child since...

1. Yang is the older sister

2. The two have different surnames

3. They are blood-related (Source: https://twitter.com/TheStalloner/status/399671768639479808)