Oh I see. Hmm, it's a very good idea to use the Song era as the setting for an Asian total war. This was the tumultuous period when there were various interactions and confrontations between different great Empires in the East. I get a bit tired after relentlessly playing Warring States (Zhanguo) Total war and Three Kingdoms Total war (Chinese version only)- essentially all about long history of Chinese civil war. All under heaven is really an ideal Oriental version of Medieval Total War.