The area of mountains more than in 4 times exceeds the area occupied with lowlands.
In 1689 the Nerchinsk agreement between Russia and Manchurian Tsinsky empire has been signed.
The average summer temperature is 18,5°C, in winter -22°C, and average annual temperature makes -1.6°C.
Approximately 244 mm of precipitation is recorded per year.
Summer is short, with hot days and cool nights, with plentiful precipitations in July and August.
Autumn comes imperceptibly, without sharp change of weather.