The modern pronunciation "Dōnghú" differs from the Old Chinese pronunciation, which roughly dates from the Warring States Period (476–221 BCE) when Donghu was first recorded. Old Chinese reconstructions of "Dōnghú" include *"Tûngɣâg", *"Tungg'o", *"Tewnggaɣ", *"Tongga", and *"Tôŋgâ" > *"Toŋgɑ". William H. Baxter and Laurent Sagart (2014) reconstruct the Old Chinese ancestor of "Hú" as *Recently, Christopher Atwood reconstructs a foreign ethnonym *"ga", which was borrowed into Old Chinese as 胡 *"gâ" (> "hú"), while an "i"-suffixed derivative of *"ga" underlies two Middle Chinese transcriptions: namely, *"Bo-lâk Khėi" (> "Bùluò-Jī") (步落稽), based on the ethnonym of a people of Xiongnu, Mountain Rong or Red Di origins in Northern Shaanxi-Shanxi-Ordos; as well as *"Gʰiei", based on the ethnonym of the Mongolic-speaking Xī (奚), whom Arab geographers knew as "Qāy".