A copy of the Buddhasaṅgīti-sūtra 諸佛要集經 T810 unearthed at Dunhuang, dated 296, which is the earliest existing Chinese Buddhist manuscript, is in Fashou's hand. See Tsui (2013): 63, 80-83, 100-101 (photographic reproduction).
[Tsui 2013] Tsui Chunghui. “Silk Road and Early Buddhist Scribal Culture in China (3-5 C).” Singapore Journal of Buddhist Studies 新加坡佛学研究学刊 1 (2013): 63-107.
Tsui Chunghui. “Silk Road and Early Buddhist Scribal Culture in China (3-5 C).” Singapore Journal of Buddhist Studies 新加坡佛学研究学刊 1 (2013): 63-107.