Xi'an has a large Muslim community , the significant majority are from the Hui group , there are an estimated 50,000 Hui Muslims in Xi'an .
Emperor Gaozong of the Tang dynasty officially allowed the practice of Islam in AD 651 .
Xi'an has a large Islam community , the significant majority are from the Hui group , there are an estimated 50,000 Hui Muslims in Xi'an .
Emperor Gaozong of the Tang dynasty officially allowed the practice of Islam in AD 651 .