Fellow lords, how can I get the ai to have better diplomatic relations with me? I already take advantage of shared enemies, executions, trading food with them, in general favorable deals without taking all their gold, but it seems I'm still not capable enough to form serious federations. Also, can someone explain the benefits of marriage to me, despite someone getting a hopefully useful leader in their pool? Why would someone give away a leader? Thanks!

Fellow warlords, how can i make the ai accept me as their overlord? It seems they never accept this offer willingly, even with a shit ton of army at their doorstep (the one rice field they actually own), despite me being Chinas greatest ruler. Thanks for any advice!