That part of the empire called Hi is a vast region, lying on each side of the Tien-shan, or Celestial Mountains, and including a tract nearly as large as Mongolia, and not much more susceptible of cultivation. The limits extend from 36° to 49° N , and from longitude 71° to 96° E. It is divided by the Tien-shan into two parts called " lu," or circuits, viz.: Tien-shanpeh-lu and Tien-shan-nan-lu, or north and south of the Celestial Mountains. The former is commonly denominated Songaria, from the Songares its former rulers, and the latter is known as Little Bokara, or Eastern Turkestan. Hi, taken as a whole, may be regarded as an inland isthmus, extending south-west from the south of Siberia, off between the Gobi and Caspian deserts, till it reaches the Hindoo-Kush, leading down to the valley of the Indus. The former of these deserts encloses it on the east and south, and the other on the west and north-west, separated from each other by the Belur-tag and the Muz-tag ranges, which join with the Celestial Mountains that divide the isthmus itself into two parts. These deserts united are equal to the extent of Sahara, but are not as arid and tenantless. Little is known of the topography, productions, or civilization of the tribes, but the efforts of the Chinese have been systematically directed to developing the agricultural resources of the country, by stationing troops in every part, who cultivate the soil, and by banishing criminals thereto, who are obliged to work for, and assist the soldiers. The productions are numerous. Wheat, barley, rice, and millet are the chief grains; tobacco, cotton, and fruits are grown; herds of horses, camels, cattle and sheep, afford means of locomotion and food for the people, while the mountains and lakes supply game and fish. The inhabitants are composed mostly of Eleuths, Mongols, Manchus, Chinese, and several native tribes. The government is under the control of the Manchu military officers residing at Hi.
Tien-shan-peh-lu is divided into three commandaries. Hi on the west, Tarbagatai on the north, and Kur-kara-usu on the east, between Hi and Oroumtsi, in Kansuh. The districts of Tarbagatai and Kur-kara-usu are small compared with Hi.
Tien-shan-nan-lu, or southern circuit of Hi, also named Sin-kiang or new frontier, has been called Little Bokhara and Chinese or Eastern Turkestan, by foreigners. It is less fertile than the Northern Circuit, the greatest part of iis area being rugged mountains and barren wastes. The Tarim flows through it from west to east, from the Belur-tag to Lop-nor, a lake lying on the edge ot the desert. No other river basins of any size are found within the circuit. The climate is exceedingly dry, and its barrenness is owing more to the want of moisture than to the nature of the soil. The productions of the valley of Tarim comprise most of the grains and fruits of Southern Europe. The mountains and marshes contains jackals, tigers, bears, wolves, &c. Gold, copper, and iron, are brought from this region ; but as articles of trade they are less important than the sal-ammoniac, saltpetre, sulphur, and asbestos, obtained in the volcanic region on the east of the Celestial mountains. The present divisions of this circuit are regulated by the position of the "eight Mahomedan cities," viz: Harashar, Kuche, Ushi, (including Sairim and Bai,) Oksu, Khoten, Yarkand, Cashgar, and Yingeshar. The superior officers reside at Yarkand, but the southern circuit is divided into four minor governments at Harashar, Ushi, Yarkand, and Khoten.
The government of Hi differs in some respects from that of Mongolia, where religion is partly called in to aid the state. In the northern circuit the authority is strictly military. The supreme command of the whole of Hi is entrusted by the colonial office to a Manchu, "tsiang-kiun," or military governor-general, resident at Kuldsha, who has under him two councillors to take cognizance of civil cases, and 31 residents scattered about in both circuits. The governor also commands the troops of Kansuh, but has nothing to do with the civil jurisdiction. The revenue is derived from a capitation tax and tithes on produce. There are no transit duties as in China, but custom-houses are established at the frontier trading ports. The character of the inhabitants north of the Tien-shan is rendered unlike that of those dwelling in the southern circuit by the diversity in their language and nomadic habits, more than by the sway religious rites and allegiance have over them. The language generally used in the south is the Jaghatai Turki of the Kalmucks. The Usbecks constitute the majority of the people, but Eleuths and Kalmucks are everywhere intermixed. The Tibetans have settled in Khoten, or more probably remnants still exist there of the former inhabitants.