What is the plot of the TV series "The Great Eunuch"?

The Great Eunuch tells the story of Li's poor family when he was a child, and his mother sent him to the palace as a eunuch in desperation. After Li Chengnian, she was trained by the great eunuch An Dehai and became the toast of Empress Dowager Cixi. But in desperation, she could only join others to become the great housekeeper of the Qing Dynasty except Andehai, and Guangxu succeeded to the throne. After the Sino-Japanese War, Li Hongzhang was both beheaded. Fortunately, under the protection of Cixi, she escaped. The Reform Movement of 1898 failed, and the contradiction between Cixi and Guangxu intensified. Li has no choice but to maintain. When Eight-Nation Alliance went to Beijing, Li helped Cixi kill Guangxu's favorite imperial concubine. Empress dowager cixi and emperor Guangxu died one after another, and Li went out of the palace, lamenting the honor and disgrace of his life, and stayed alone with cixi.