First, I would like to point out that it would be ridiculous to take anything in this film as historical facts. It's very loosely inspired by Romance of the Three Kingdoms -- the classical war epic written by Luo Guangzhong six centuries ago -- but except for some shared characters, you would not recognise the film from the book. The plot, as offered by Karazen News goes:
The young Zhao Ziling (Andy Lau) goes to war against Cao Cao, a cunning politician and military strategist. Finally, Cao Cao’s forces are sent into retreat, but the battles between feuding warlords continue for sixty years. Zhao Ziling, now an old man, must finally take to the field against Cao’s warrior grand-daughter, Cao Ying (Maggie Q.)
Everything says "B Grade Big Budget War Epic" waiting to happen. What say you that Andy Lau and Maggie Q's characters end up in love?
That said, the trailer for the movie looks fun -- in a "I have 20 millions to spend on this movie" sort of fun. While it has Andy Lau and Maggie Q as the leads, I am more keen to watch Sammo Hung on the big screen after his long hiatus. (I snickered at the thought of Vaness Wu on screen)