Detailed Instructions: Generate a correct and concise answer for the question based on the words in the context.
Q: Context : Empress Gongrangzhang (), personal name Hu Shanxiang () (died 1443), married the Xuande Emperor in 1417 but was deposed in 1428, mother of Princess Shunde Empress Xiaogongzhang (), family name Sun () (died September/October 1462), daughter of Sun Zouzhong (), initially created an Imperial Concubine () in 1417, elevated to the rank of Noble Consort () upon the Xuande Emperor's accession in 1425, created empress in 1428 after the deposition of Hu Shanxiang, became Empress Dowager () upon the accession of her son, created Empress Dowager Shangsheng () in December 1449, created Empress Dowager Shengliecishou (), mother of the Zhengtong Emperor and Princess Changde Empress Dowager Xiaoyi (), family name Wu () (died December 1461), daughter of Wu An (), granddaughter of Wu Yanming (), created Consort Xian () in 1428, initially given the posthumous name Consort Rongsixian (), posthumously honored as Empress Dowager Xiaoyi by the Chongzhen Emperor, mother of the Jingtai Emperor Imperial Concubine Guo Ai (), personal name Guo Ai (), courtesy name Shanli () (died 1435), was buried with the Xuande Emperor after his death
Question : What is Xuande Emperor's spouse's name?
A:
Empress Xiaogongzhang