5. Jack Ma feels proud for building the trust system

Jack Ma said building trust is most important for e-commerce. It makes it possible for Alibaba to finish 60 million transactions every day.

"I'm so proud today." He recalled that some of his friends were strongly against his idea of setting up Alipay, Alibaba's online payment arm, saying it was "the stupidest idea."

Advertisements for Alipay, payment services of Alibaba, are seen at a subway station in Shanghai, Dec 8, 2014. [Photo/IC]