Coba jelasin Karya dari Guo Songtao dong

Kuo, Sung-t'ao, Hsi-hung Liu, and Te-i Chang. *The First Chinese Embassy to the West; the Journals of Kuo-Sung-T'ao, Liu Hsi-Hung and Chang Te-Yi. Translated by J. D. Frodsham. Oxford: Clarendon Press, 1974.

Visit of the Chinese Ambassadors to Ipswich”, report in the “Ipswich Journal” July 3, 1877 ( Hong Kong Railway Society – P.A. Crush Chinese Railway Collection)