I am a first-year CS Ph.D. student at the School of Data Science, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), advised by Prof. Guiliang Liu. I received my B.Eng. in Automation from Harbin Institute of Technology, Shenzhen in 2025, ranking in the top 2% of my cohort.

My research focuses on building embodied agents that can learn from interaction, adapt to new situations, and transfer robust behaviors across real-world settings. I am particularly interested in reinforcement learning for robotic control, robot representation learning, and test-time steering/adaptation.

My work has appeared in top-tier AI and robotics venues, including ICML, ICLR, and ICRA.

I have also been fortunate to work as a research intern at Shanghai AI Laboratory, mentored by Ming Zhou.

At a high level, I enjoy working on algorithms and systems that make physical intelligence more general, reliable, and deployable.

📰 News

2026RoboFlow4D, DyGRO, and BiTrajDiff were accepted to ICML 2026.
2026HWC-Loco was accepted to ICLR 2026, and SignBot was accepted to ICRA 2026.
2025Started my Ph.D. at the School of Data Science, CUHK-Shenzhen.
2025Received my B.Eng. in Automation from Harbin Institute of Technology, Shenzhen.

📄 Selected Publications

ICLR 2026
HWC-Loco overview

HWC-Loco: A Hierarchical Whole-Body Control Approach to Robust Humanoid Locomotion

Sixu Lin, Guanren Qiao, Yunxin Tai, Ang Li, Kui Jia, Guiliang Liu

A hierarchical whole-body control approach for robust humanoid locomotion across diverse terrains, robot structures, and disturbance settings.

ICML 2026
RoboFlow4D pipeline

RoboFlow4D: A Lightweight Flow World Model Toward Real-Time Flow-Guided Robotic Manipulation

Sixu Lin, Huaiyuan Xu, Junliang Chen, Zhuohao Li, Guangming Wang, Yixiong Jing, Sheng Xu, Runyi Zhao, Brian Sheil, Lap-Pui Chau, Guiliang Liu

A 4D flow representation and policy learning framework for robotic manipulation.

ICML 2026
DyGRO pipeline

DyGRO-VLA: Cross-Task Scaling of Vision Language Action Models via Dynamic Grouped Residual Optimization

Sixu Lin, Yunpeng Qing, Litao Liu, Ming Zhou, Ruixing Jin, Xiaoyi Fan, Guiliang Liu

A dynamic grouping residual reinforcement learning framework for adaptive embodied policies.

ICML 2026
BiTrajDiff paper thumbnail

BiTrajDiff: Bidirectional Trajectory Generation with Diffusion Models for Offline Reinforcement Learning

Yunpeng Qing, Yixiao Chi, Shuo Chen, Shunyu Liu, Kelu Yao, Sixu Lin, Litao Liu, Changqing Zou

A bidirectional diffusion framework for offline reinforcement learning that models both future and history trajectories from intermediate states.

ICRA 2026
SignBot pipeline

SignBot: Learning Human-to-Humanoid Sign Language Interaction

Guanren Qiao, Sixu Lin, Ronglai Zuo, Zhizheng Wu, Kui Jia, Guiliang Liu

A human-to-humanoid sign language interaction framework spanning motion retargeting, motion control, and generative interaction.

arXiv 2025
VLAC framework

A Vision-Language-Action-Critic Model for Robotic Real-World Reinforcement Learning

Shaopeng Zhai, Qi Zhang, Tianyi Zhang, Fuxian Huang, Haoran Zhang, Ming Zhou, Shengzhe Zhang, Litao Liu, Sixu Lin, Jiangmiao Pang

A vision-language-action-critic model that provides dense progress rewards and action generation for real-world robot reinforcement learning.

arXiv 2025
SMAP framework

SMAP: Self-supervised Motion Adaptation for Physically Plausible Humanoid Whole-body Control

Haoyu Zhao*, Sixu Lin*, Qingwei Ben, Minyue Dai, Hao Fei, Jingbo Wang, Hua Zou, Junting Dong

A self-supervised motion adaptation framework for physically plausible humanoid whole-body control.

ICML 2025
MASQ framework

MASQ: Multi-Agent Reinforcement Learning for Single Quadruped Robot Locomotion

Qi Liu, Jingxiang Guo, Sixu Lin, Shuaikang Ma, Jinxuan Zhu, Yanjie Li

A multi-agent reinforcement learning formulation that treats the legs of a single quadruped robot as cooperating agents.

💼 Experience

Nov. 2025 - Present
Research Intern
Shenzhen Loop Area Institute (SLAI)

Research internship on embodied intelligence and robotics.

Mar. 2025 - Sep. 2025
Research Intern
Shanghai AI Laboratory

Worked on vision-language-action models and reinforcement fine-tuning.

Sep. 2024 - Nov. 2024
Undergraduate Researcher
Tsinghua University

Undergraduate research on robotics and reinforcement learning.

Feb. 2024 - May 2024
Remote Research Collaborator
Georgia Institute of Technology

Remote research collaboration on embodied AI and robotics.

🎓 Education

  • 2025 - Present, Ph.D. in Computer Science, The Chinese University of Hong Kong, Shenzhen.
  • Jul. 2024 - Sep. 2024, Visiting Student, Westlake University.
  • Jul. 2023 - Sep. 2023, Visiting Student, University of Oxford.
  • 2021 - 2025, B.Eng. in Automation, Harbin Institute of Technology, Shenzhen. Rank: top 2%.

🏅 Honors & Awards

  • Dec. 2025: 🏆 Top 1.3% (ranked 6th of 463 teams) in the Tencent AI Arena Global Open Competition, Reinforcement Learning Embodied-AI Track (award: CNY 15,000).
  • 2025-2029: 🏅 Yongping Duan Scholarship (CNY 15,000/month).
  • 2023-2024: 🏅 National Scholarship (top 0.2% of students at Chinese universities).
  • 2023-2024: 🏆 The 18th National University Students Intelligent Car Race, National Second Prize.
  • 2022-2024: 🏅 First-Class Scholarship for Undergraduate Students (top 5%; awarded twice; total: CNY 12,000).
  • 2021-2022: 🏅 Second-Class Scholarship for Undergraduate Students (CNY 4,000).
  • 2021-2023: 🏅 Outstanding League Member (2 times).
  • 2021-2023: 🏅 Outstanding Student (2 times).

📘 Teaching

  • Teaching Assistant, CSC-1004: Computational Laboratory Using Java, The Chinese University of Hong Kong, Shenzhen.

🤝 Service

  • Reviewer: NeurIPS, ICML, ICLR, ICRA, IROS.