uh, well yan kuan is a supporting character there, but he was an important character here, as i think he sort of went bad here... and he has quite a few scenes here. forgive me for saying this. but Wang yan and Yan Kuan's pairing here didn't do it much for me, the didn't have that much chemistry, they look more like brother and sister here than lovers.
if you really want to see yan Kuan in a leading role, then see Da Ming Wang Chao. i dunno if its accurate with the actual history but the series is very good. it has a nice script and tight storytelling. and of course, dozens of close ups of Yan Kuan's face!