B. On the last invasion (1226), D'Ohsson's Chinese authority says that
Chinghiz took Kanchau and Suhchau, Cholo and Khola in the province of
Liangcheu, and then proceeded to the Yellow River, and invested Lingchau,
south of Ning-hsia.
Erdmann, following his reading of Rashiduddin, says Chinghiz took the
cities of Tangut, called Arucki, Kachu, Sichu, and Kamichu, and
besieged Deresgai (D'Ohsson, Derssekai), whilst Shidergu, the King of
Tangut, betook himself to his capital Artackin.
D'Ohsson, also professing to follow Rashid, calls this "his capital
Irghai, which the Mongols call Ircaya." Klaproth, illustrating Polo,
reads "Eyircai, which the Mongols call Eyircaya."
Petis de la Croix, relating the same campaign and professing to follow
Fadlallah, i.e. Rashiduddin, says the king "retired to his fortress of
Arbaca."
C. Sanang Setzen several times mentions a city called Irghai,
apparently in Tangut; but all we can gather as to his position is that
it seems to have lain east of Kanchau.
We perceive that the Arbaca of P. de la Croix, the Eyircai of
Klaproth, the Uiraca of D'Ohsson, the Artacki or Artackin of
Erdmann, are all various readings or forms of the same name, and are the
same with the Chinese form Ulahai of De Mailla, and most probably the
place is the Egrigaia of Polo.
We see also that Erdmann mentions another place Aruki ([Arabic]) in
connection with Kanchau and Suhchau.
