Yifeng electric business college. Yifeng Electronic Business School has been a cross-border training institution focusing on Amazon e-commerce training since its establishment on 20 16, and is recognized as the cross-border training institution with the highest gold content in the industry. Cross-border electronic commerce refers to an international business activity in which transaction subjects belonging to different customs reach a deal, make payment and settlement through e-commerce platform, and deliver goods and complete the transaction through cross-border logistics.