basically it's the same story. they changed the Dynasty into a Ming-like and instead of the imperial family you have the emperor's brother's family (kind of interesting, we never see a prince in his fiefdom)
if you are Fan Bing Bing fan and want to see her in Tang Dynasty clothes again, this is your drama. not much historical accuracy but plenty of harem plots and in the end heads will roll
the journey of two strong women from noble naive young girls to the imperial throne, but love might taste bitter
just few details link the second season to the 1st and sadly it's not as trong and epic as the first one
new emperors, new threats, new hardship on Sima Yi's way to the power. in the end tears will flow like a river
from the same screenwriter, set in the same dynasty, it's a sort of a prequel but from the imperial family point of view
basically if you want to see Li Yi Xiao playing the same character and having fun with her being over the top, this is your drama
the sequel of the first. if you want more of yngluo and gianlong and if you can't have enough of palace drama and plots, you can't miss it
the long journey of Sima Yi, from gentry to ultimate power. even though both dramas cover mostly the same time and are about the same story, Secret of Three Kingdoms has a more compelling aesthetic and offers more eyecandies, but if you're after politics and plots then Advisors Alliance is your drama, don't miss the second season!
the story revolves around the same characters, the villain in one is the lead in the other. the game is trying to guess who is who among the imperial consorts
a secret plot that can break a kingdom, great script and fast action, memorable characters and strong women. the end of every episode leaves you asking for more
if you want to know how the story ends you can't possibly miss the squel, but remember there's no happiness in imperial China