大秦景教流行中国碑
The name "Daqin" for Rome was used on Chinese maps as late as the 16th century, such as the Sihai Huayi Zongtu. The identification of "Daqin" with the Western Roman Empire, Eastern Roman Empire, or the Church of the East varies with the era and context of the document. The Nestorian Stele erected in 781 in the Tang capital Chang'an contains an inscription that briefly summarizes the knowledge about Daqin in the Chinese histories written up to that point and notes how only the "luminous" religion (i.e. Christianity) was practiced there.