About Me

Hi! I'm a researcher at ByteDance Seed in Beijing. Previously, I was a founding member of Morpheus AI (acquired by Roblox), where I worked on real-time interactive video world models. Before that, I was a research intern at UCSD Hao AI Lab, advised by Prof. Hao Zhang. I received my master's degree in Robotics from the University of Michigan and my B.Eng. in Robotics with honors from Chu Kochen Honors College at Zhejiang University in 2023.

I'm deeply grateful for my time at Hao AI Lab—it was an incredibly formative experience working with such a passionate and inspiring team. If you're interested in MLSys and looking for research internships, don't hesitate to reach out to Prof. Hao Zhang!

I'm always happy to connect with people from diverse backgrounds, whether in academia or industry. Feel free to reach out via email at yongqichcd@gmail.com or on WeChat: Gaabiiiiii.

News

  • 09/2026 – Joined ByteDance Seed as a Researcher.
  • 06/2026 – Left Morpheus AI. It was another incredible journey!
  • 06/2026 – Morpheus AI acquired by Roblox!
  • 11/2025 – STA is adopted by Tencent HunyuanVideo-1.5, and VSA is used by Meituan LongCat-Video!
  • 09/2025 – VSA is accepted to NeurIPS 2025!
  • 09/2025 – Joined Morpheus AI as a Founding Engineer.
  • 08/2025 – Released FastWan and Sparse-Distill!
  • 05/2025 – Released FastVideo V1: A Unified Framework for Accelerated Video Generation.
  • 04/2025 – STA is accepted to ICML 2025!

Publications

*Equal Contribution

Faster Video Diffusion with Trainable Sparse Attention
Peiyuan Zhang*, Yongqi Chen*, Haofeng Huang*, Will Lin, Zhengzhong Liu, Ion Stoica, Eric P. Xing, Hao Zhang
NeurIPS, 2025
Paper / Blog
Fast Video Generation with Sliding Tile Attention
Peiyuan Zhang, Yongqi Chen, Runlong Su, Hangliang Ding, Ion Stoica, Zhengzhong Liu, Hao Zhang
ICML, 2025
Paper / Blog

Experience

Researcher, ByteDance Seed

Advisor: Haoqi Fan · Sep. 2026 – Present

Founding Engineer, Morpheus AI (acquired by Roblox)

Advisor: Xun Huang · Sep. 2025 – Jun. 2026

Research Intern, UCSD Hao AI Lab

Advisor: Hao Zhang · Nov. 2024 – Aug. 2025

Open Source Projects

FastVideo: A unified inference and post-training framework for accelerated video generation
GitHub / Blog

Education

  • University of Michigan, Ann Arbor – M.S. in Robotics, 2025
  • Zhejiang University – B.Eng. in Robotics, Chu Kochen Honors College, 2023
  • Chengdu No.7 High School, 2019

🎯 Fun

  • 🎤 I enjoy listening to and singing Chinese pop music. You can check out my live performances here!