I am currently a Computer Science undergraduate at Huazhong University of Science and Technology and an exchange student at the University of California, Santa Barbara. I work with the UCSB AI, advised by Prof. Xin (Eric) Wang.

My current research interests lie in multimodal agents and trustworthy AI. Previously, I worked on an internal web IDE and developer tooling at ByteDance, and on software testing research with Prof. Darko Marinov’s group at UIUC.

News

2026.05: WorldMemArena is now available on arXiv.
2026.05: HarnessAudit is now available on arXiv.
2026.04: OmniTrace is now available on arXiv.

Publications & Preprints

Auditing Agent Harness Safety

Agent Safety Harness Auditing

Website arXiv Code Dataset

arXiv preprint 2026. (* Equal contribution)

Chengzhi Liu*, Yichen Guo*, Yepeng Liu, Yuzhe Yang, Qianqi Yan, Xuandong Zhao, Wenyue Hua, Sheng Liu, Sharon Li, Yuheng Bu, Xin Eric Wang.

WorldMemArena: Evaluating Multimodal Agent Memory Through Action–World Interaction

Agent Memory Multimodal Agents

Website arXiv Code Dataset

arXiv preprint 2026

Chengzhi Liu, Yuzhe Yang, Sophia Xiao Pu, Yepeng Liu, Lin Long, Yichen Guo, Nuo Chen, Zhaotian Weng, Elena Kochkina, Simerjot Kaur, Charese Smiley, Xiaomo Liu, James Zou, Sheng Liu, Yuheng Bu, Songyou Peng, Xin Eric Wang.

OmniTrace: A Unified Framework for Generation-Time Attribution in Omni-Modal LLMs

Generation-Time Attribution Omni-Modal LLMs

Website arXiv Code

arXiv preprint 2026

Qianqi Yan, Yichen Guo, Ching-Chen Kuo, Shan Jiang, Hang Yin, Yang Zhao, Xin Eric Wang.

Projects

AI-powered Full-stack PCB Defect Detection System

Code

An end-to-end PCB defect detection system integrating YOLOv9, Huawei ModelArts, a HarmonyOS app, backend services, board-side deployment, and NPU training.
Ranked #2 in the Huawei Cloud track and won the National Grand Prize in the 19th Challenge Cup.