I am a PhD candidate at the University of Hong Kong (香港大學) under the supervision of Prof. Bruno C. d. S. Oliveira. My research revolves around programming languages, especially focusing on type systems reconciling object-oriented and functional programming. I received my Bachelor's degree from Chu Kochen Honors College of Zhejiang University (浙江大学) in 2019. I was an exchange student at Tokyo Institute of Technology (東京工業大学) under the supervision of Prof. Hidehiko Masuhara in 2017.

During my undergraduate years, I was the founder of ZJU Apple Club. I led the development of Qiushichao Mobile for iOS, which has been the most popular campus app at Zhejiang University.

My Chinese name is 孫 耀珠Sūn Yàozhū. For your information, it is read as そん ようじゅ in Japanese or 손 요주 in Korean, both of which can be romanized as Son Yoju. If you find Chinese romanization hard to read, feel free to pronounce my name in Japanese or Korean style.


University of Hong Kong » Programming Languages Group
Doing research on the theory, design, implementation, and application of Compositional Programming, a new modular programming paradigm that solves challenges such as a three-dimensional Expression Problem. An online demo is available at PLGround.
Compositional Embeddings of Domain-Specific Languages .
Yaozhu Sun, Utkarsh Dhandhania, and Bruno C. d. S. Oliveira.
ACM SIGPLAN International Conference on Object-Oriented Programming Systems, Languages, and Applications, December 2022.
Direct Foundations for Compositional Programming .
Andong Fan¹, Xuejing Huang¹, Han Xu, Yaozhu Sun, and Bruno C. d. S. Oliveira.
European Conference on Object-Oriented Programming, June 2022.
Compositional Programming .
Weixin Zhang, Yaozhu Sun, and Bruno C. d. S. Oliveira.
ACM Transactions on Programming Languages and Systems, 43(3), September 2021.
Distinguished Artifact Award! (This is a journal-first paper published in TOPLAS and presented at ECOOP.)
Doing research on the encoding of labeled and optional arguments in a minimal calculus.
Named Arguments as Records (Draft) .
Yaozhu Sun and Bruno C. d. S. Oliveira.
Presented at the International Symposium on Trends in Functional Programming, March 2022.
Tokyo Institute of Technology » Programming Research Group
Conducted research on object-oriented high-performance computing and contributed to Ikra-Ruby and Ikra-Cpp.
Inner Array Inlining for Structure of Arrays Layout .
Matthias Springer, Yaozhu Sun, and Hidehiko Masuhara.
ACM SIGPLAN International Workshop on Libraries, Languages, and Compilers for Array Programming (peer-reviewed, co-located with PLDI), June 2018.


Microsoft Research Asia » Machine Learning Group » Research Intern
April 2019 – July 2019
Huawei 2012 Labs » Compilers and Programming Languages Lab » Software Development Intern
July 2018 – August 2018


Teaching Assistantships

Academic Service