Introduction：Academician Ji-ren Cai is an academician of the Chinese Academy of Engineering and a famous cryptologist, responsible for guiding the integration and application of quantum cryptography and traditional cryptography.

He is major academic leaders in the field of computer information security in China, and Chief Scientist of the "Information and Cybersecurity" Project of the National Key Basic Research and Development Plan. He has won one first prize and five second prizes of the National Science and Technolog.