That's because you set 2 leaders as Wang Kon. But one's a vassal of the other!
I'm confuzzled, when you create a colony you create a clone of yourself that's a vassal? And they can have a different attitude as the master and everything! Weird, which is why I will only play on lakes maps.
I don't see it.
And if you're going to whip always make sure that you're whipping at least 2 population at a time, and you will never get unhappiness.
I don't get it. If you have a defensive pact it get's cancelled if you declare war.
Paris is slightly different to what I remembered then.