"Arias Montanus was among the first to suggest that the Sinim are the Sinese (Chinese); and since the question has been so thoroughly discussed by Gesenius (in his Commentary and Thesaurus), most of the Commentators, and also such Orientalists as Langles (in his Recherches Asiatiques), Movers (in his Phœnicians), Lassen (in his Indische Alterthumskunde, i. 856–7), have decided in favour of this opinion."
"The name Θῖναι (Strabo), Σῖναι (Ptol.), Tζίνιτζα (Kosmas), says the Sinologist Neumann, did not obtain currency for the first time from the founder of the great dynasty of Tsin; but long before this, Tsin was the name of a feudal kingdom of some importance in Shensi, one of the western provinces of the Sinese land, and Fei-tse, the first feudal King of Tsin, began to reign as early as 897 B.C."—Franz Delitzsch, D.D., in his Commentary on the Prophecies of Isaiah.