How did Ji Wang die in Wei Zifu?

Ji Wang and her sister are talking about Huo Qubing. Huo Qubing heard about it and told the emperor that the emperor lured Ji Wang to the Pepper Room Temple. When she and her sister saw the queen's throne, they sat up, claimed to be the queen, and threatened to punish the heavy emperor for the death of Wang Sang in Korea. Ji Wang gave birth to a prince, named Liu Hong King of Qi, and asked Ji Wang to be the Empress Dowager of Qi in the fief, and never entered the palace again in this life (not dead). Since then, there have been no shots of Ji Wang.