What are the characteristics of cold climate, frozen soil and building J in Russia?

Most areas belong to temperate and sub-cold continental climate, with long, dry and cold winters and short summers.

It is warm, and the spring and autumn seasons are fleeting. During the year, the temperature is high, the precipitation is low, and the rainfall variability is large.

Frozen soil is a continental climate caused by high latitude or cold winter. There are few permafrost regions in South China, and the underground ice is rich, with rheological properties, and its long-term strength is far lower than the instantaneous strength.

Semicircular roofs, layered structures, large inclined church spires, etc.