I've rewatch this drama many times, Idk abt others but I really love GeSun CP! Changge is very young character thus her character at the beginning story isn't matured however she is really try. Between hatred vs her country she choose country, she is former princess but she still want to fight for her people. Its very hard for her, almost everyone she loved is died. A'Sun is powerful n cold ml but start to care for Changge. He do his best to protect Changge at any cost, from cold general he become gentle but he is very good leader.

Ik many ppl love Haodu character but I dislike his character, badboy isn't my cup of tea alt I know he is changing at the end... Princess Youning is too innocent, I pity her but ik her depressed scene is for her growth.

Ik some of this is real in history alt they changed... But a few character is real. Li Shimin is great ruler actually, Tang Dynasty should be proud to have him. Gongsun Heng, he died for ppl, he's earned my respect n heartache.