(1) Russia is rich in mineral resources and is an important industrial country with developed heavy industry and backward light industry. Therefore, China's exports to Russia mainly include toys, sporting goods, leather products, bedding, clothing, shoes and furniture and other light industrial products;

(2) Russian passenger transport is mainly by railways and highways, and freight transport is mainly by railways and pipelines, among which pipelines mainly transport oil and natural gas;

(3) Topographically, Russia and southern Asia are mountainous, which increases the difficulty and cost of railway construction; From the climate point of view, some parts of Asia in Russia have high north latitude, cold climate, long soil ice age and low south latitude, and the climate conditions are better than those in the north; From the distribution of resources and industries, the southern part of Russia is rich in mineral resources, and the construction of railways here is conducive to the development of resources and industries; Judging from the distribution of population and cities, because there are many people and cities here, the construction of railways can communicate the economic and cultural ties between different regions.

So the answer is: (1) China exports this kind of goods because the Russian consumer goods manufacturing industry, which is closely related to people's lives, is relatively backward; China's consumer goods manufacturing industry is relatively developed, and the Russian commodity market is broad; (2) Passenger transport is mainly by rail and highway, and freight transport is mainly by rail and pipeline, in which pipelines mainly transport oil and natural gas; (3) Topographically, Russia and southern Asia are mountainous, which increases the difficulty and cost of railway construction; From the climate point of view, some parts of Asia in Russia have high north latitude, cold climate, long soil ice age and low south latitude, and the climate conditions are better than those in the north; From the distribution of resources and industries, the southern part of Russia is rich in mineral resources, and the construction of railways here is conducive to the development of resources and industries; Judging from the distribution of population and cities, because there are many people and cities here, the construction of railways can communicate the economic and cultural ties between different regions.