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781 - Xi'an (Nesotrian) Stele erected
1625 - Xi'an Stele discovered
Nestorianism
Xi'an Stele, Nestorian Stele
China
Christian History Institute references to Alopen
Alopen - Wikipedia
A Brief History Of Christianity In China - Serene Fang (PBS)
Aluoben, A Nestorian Missionary In 7th Century China - Kahar Barat (JSTOR)