Can’t a Commandery Princess Take the Throne?

Outsiders always thought Ying Jiuke was delicate and incapable of looking after herself, plagued by bad luck and constantly stumbling upon crime scenes. That was until, at the emperor's birthday banquet, she casually brought a brick down on an assassin, smashing away half his skull... Ying Jiuke wiped the blood from her hands. "If I say I only did it on instinct, will they believe me? Will they believe me if I say I can produce salt and know where to find gold mines? Will they believe me if I say I can lead troops into battle?" The old emperor, who heard her thoughts: "...This child is honest and good-natured. She saved my life without asking for anything in return. She must be rewarded!" Afterward, just as everyone failed to understand why the old emperor trusted Ying Jiuke so much, she rose rapidly from County Princess onward. Showered with excessive favor, Ying Jiuke also failed to understand why those people were so foolish. Could it be that her divine strength, concern for the common people, and meticulous planning... were all only for an empty title like County Princess? County Princess, Commandery Princess, Countess, Marquis, Duke, General... and finally, the uncrowned queen who commands the Northern Border! What else could give her peace of mind after that, other than the supreme throne? Could a Commandery Princess really not ascend the throne? Power has always been the best tonic for women.