When Zhu Zhanji's father, Hongxi Emperor ascended the throne in 1424, she was appointed Crown Princess (Chinese: 皇太子妃; pinyin: huángtàizǐ fēi).
The emperor did not like her for not having a son, and when she at one occasion advised him not to indulge in his love of travel, he resented her for meddling in affairs that did not concern her.
Grand Secretary Yang Shiqi, after failing to convince the emperor of the danger in deposing the empress without good reason, argued that it would offend his reputation.
[3] And so in the spring of 1428, the emperor had Empress Hu deposed from her position in favour of the mother of the crown prince, sent to Chang'an Palace and given a title of Immortal Teacher of Quietude and Maternal Compassion (Chinese: 静慈仙师; pinyin: Jìng cí xiān shī), previously given to deposed empresses who were forced to become nuns, although this religious element was not demanded of Hu.
[1][2] She was ranked a consort (Chinese: 妃; pinyin: fēi), and thus no longer enjoyed an equal status with Empress Sun.