1. Sangfor Technologies Inc, Shenzhen, China
2. College of Computer Science and Software Engineering, Shenzhen University, Shenzhen, China
3. Computer Network Information Center, Chinese Academy of Sciences, Beijing, China
4. Futurewei, San Jose, United States of America
5. Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen, China
6. Electrical Engineering Department, University of Toronto, Toronto, United States of America