Empress Tianzi

Tianzi (天子, Tenshi) is the young Empress of the Chinese Federation, thus far referred to only by the traditional title attributed to the Chinese Emperor (Tianzi literally means "the Son of Heaven"). Her real name is Jiang Lihua (蒋麗華, チェン・リーファ) She is thirteen years old, born on January 18th, with blood type of O.

In practice, she is effectively a prisoner within her own palace, which she dislikes. She saves Li Xingke from execution for stealing some medicine, and in return he promised to take her outside the palace walls. In the second season, she befriends Kaguya Sumeragi during their talks concerning the future of Area 11.

She was to be married to Prince Odysseus in a political marriage in the second season, and invites Kaguya to the ceremonial dinner the day before, who brings Zero along with her. The ceremony is interrupted by Li Xingke who instigates a coup d'état. However, as Xingke was about to reach her, she was held hostage by Zero, who retreated to the Black Knights' transport. During this time, Kaguya attempts to comfort her. While attempting to escape to India, the convoy is interrupted by Xingke in the Shenhu, who successfully captures the Guren and forces the Black Knights to retreat, hiding out in the Emperor's Tomb.

During the assault by the Federation and Britannian forces, Tianzi climbs onto the top of the Ikaruga, pleading for the conflict to stop. Xingke attempts to use the Shenhu as a shield to protect her, but Zero intervenes in the Shinkirō, protecting them both and exposing the High Eunuchs disregard for their country. The Britannian forces retreat, and Xingke assassinates the remaining Eunuchs. Diethard Reid suggests marrying her off to a Japanese to secure an alliance, but this is eventually disregarded. Tianzi is placed back in control of the Federation, making them Lelouch's first allies in his global alliance. She later became the representative of the newly formed United States of China, and was captured by Suzaku and held hostage with the other delegates on the Avalon. She is eventually rescued by Sayoko. She is last seen in the epilogue in a pair of photos: one where she is attending Kaname Ohgi and Villetta Nu's wedding and another where she is posing with Gino Weinberg.