Everyone is used to the fact that English is an international language, they studied it to be able to get a job in an international company, to communicate with the global community, to understand international scientific articles. 

When a new strong player appeared on the world stage - China (by the way, there is also India, but everyone ignores this fact). Then the mass resident ran to learn Chinese. But these are different things. English is an international language, but Chinese is not, and most importantly, China does not seek to make it so. They chose the closedness of the community and conduct all their international conversations in English and do not even try to lure anyone. If you plan to do business with the Chinese, learn English or hire a translator - it will be both cheaper and easier. 

You need to learn it only if you have planned to move. And given the number of institutions teaching Chinese, half of Russia is moving to the Celestial Empire tomorrow.