Current & Former International Visitors

Current International Visitors

Shuhan LEI (Max)
Undergraduate Student

Mr. Shuhan LEI is currently a BASc student in Electrical Engineering at the University of Toronto, distinguished on the Dean’s Honour List. He is now doing a summer research internship focusing on RISC-V High-Level Synthesis and Architecture under the supervision of Prof. Ray C. C. Cheung at the City University of Hong Kong.

His research interests include:
– RISC-V processor design

Former International Visitors

Theodora Kwok

– Freshman at Carnegie Mellon University studying Electrical & Computer Engineering
– A former student member of the CityU GEF program
– Currently interested in microelectronics and quantum computing, but keen to explore other fields of ECE
– Joined in Dec 2023



Junhao HUANG (Joshua)

Joshua received his Bachelor and Master degrees from Nanjing University of Aeronautics and Astronautics in 2018, and 2021, respectively. He is a visiting PhD student from the BNU-HKBU United International College. His research interests include public-key cryptography, post-quantum cryptography and cryptographic engineering for IoT devices. Visiting CALAS from July 2023 to December 2023.


Ryan Lerner

Ryan Lerner is a senior year student at the University of Massachusetts Amherst, who majors in Chinese American Mental Health. Currently working as a student educator, developing learning materials on digital literacy for K12 students and University students from different major disciplines.


Josiah WAN

Josiah Wan is an undergraduate senior student studying Electrical Engineering at the University of Washington (Seattle) in the United States. Interested in Embedded Computing System and FPGA. Joined Dr. Ray Cheung’s CALAS group since July 2022.



Mr. Man-Kit Sit

Mr. Man-Kit Sit received his BEng in Computer Engineering in 2016 from the Chinese University of Hong Kong, Hong Kong. He got his MSc in Information Technology in 2018 from Keio University, Japan. He is a Ph.D. student at Imperial College London, UK. He is also now a research assistant in the CALAS group since March 2020.

His research interests include:
– Distributed Systems
– Hardware Security
– Hardware Acceleration

Dr. Runbin Shi received his BEng, MSc in Electronic Engineering in 2013 and 2016 at Soochow University. He obtained his PhD at the University of Hong Kong, December 2020. He joined Dr. Ray’s CALAS group in January 2021.

His research interests cover:
* better abstraction of different application domains (e.g., machine learning, graph mining and tensor contraction);
* scalable domain-specific architecture and customized instruction set;
* compilation strategy for optimal workload scheduling.

Wang Yaqi (2020)
She is a visiting student from Shandong University, majoring in Communication Engineering. She joined Dr. Ray’s CALAS group in April 2020 until Aug 2020.

Her research interests include:

  • Hardware implementation of the lightweight cipher
  • FPGA System designs and developments

Visiting CALAS from April 2020 – ongoing, from Shangdong University, China

Mr. Daniele Venier (2019) is an undergraduate student studying Computer Engineering at the Politecnico di Milano in Milan, Italy. He came to CityU as an exchange student during his 3rd year. Daniele has previously participated in international competitions in competitive programming and cybersecurity and worked at several companies as a developer. He approached Dr. Ray C. C. Cheung in order to do research in the field of cryptography.

Current research interests include

– post-quantum cryptography
– cryptographic hardware implementation on FPGA

 Visiting CALAS from Sept 2019 – Dec 2019, from Italy


Miss Xiong Zhili (2019), visiting student from Wuhan University, June 2019 – Aug 2019 – Working on Secure RISC-V Project.





Miss Xinyi Huang (2019), visiting student from Wuhan University, June 2019 – Aug 2019 – Working on Secure RISC-V Project.





Miss Wang Bishan (2018), visiting student from Wuhan University, Sept 2018 – Dec 2018 – Working on Deep learning AI FPGA Project.





Choi Ching Lam is a student at the Diocesan Girls’ School, keenly interested in Computer Vision and Scientific Computing. She is an open-source enthusiast with a deep appreciation for Julia and Python. Presently an intern at NVIDIA’s AI Tech Center, Ching Lam aspires to become a Machine Learning researcher.



We welcome international students to come and visit our group in Hong Kong. Please contact Dr. Ray for any openings.

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