1. Relationship with China's strategic partners: AIIB is an important pawn for China to establish new economic rules in the world. I can't help you with your brother's business.

2. Self-strategic considerations: A large amount of Russian foreign exchange comes from oil. Oil has always been limited by dollar pricing. So when America was unhappy, he went to oil. AIIB is an important step in the internationalization of RMB. In the future, the internationalization of RMB will give Russia and even the rest of the world one more choice, so it will not be angry with the United States.

3. Economic benefits: AIIB is actually an important way for countries to export capital and production capacity. At present, the global economy is weak, and everyone is looking for new growth. The success of AIIB will be a new growth point beneficial to the world.

4. International political considerations: AIIB is a new international financial game rule led by China. Breaking the management of Europe and America as rule makers in the past will bring new sights to the world.