The field of human–computer interaction advances the design, implementation, and evaluation of interactive computing systems to enhance the exchange of information between people and digital technologies. Continuous innovation in HCI has transformed computing from a specialist tool to an indispensable part of daily life for billions of users. As a key element of national technology strategy, information innovation, and socioeconomic development, HCI research enjoys strong support from both academia and industry.

CHCI 2025 will be held jointly with the 21st Pervasive Computing Conference (PCC 2025) as part of the 21st Harmonious Human–Machine Environment Joint Conference (CCF HHME 2025), organized by the China Computer Federation (CCF) and co‐sponsored by its HCI, Pervasive Computing, and Collaborative Computing special interest groups. The event takes place August 21–25, 2025 in Dalian, China. We welcome researchers, designers, developers, and practitioners to submit their latest work, share insights on future trends, and foster close industry–academia collaboration in HCI.

• HCI Theory, Methods & Systems
• Interaction Design & Interface Evaluation
• Natural Interaction Techniques & Interfaces
• Virtual & Augmented Reality
• Novel Interaction Devices & Materials
• Human Performance & Ergonomics

• Collaborative & Multi-User Interaction
• Multimodal Interaction (Audio, Visual, Haptic, Olfactory)
• Hybrid Intelligence Methods & Technologies
• Accessible & Inclusive Interaction
• Multimodal Computing & Perception

1. Full Papers
Submissions in English or Chinese are both accepted. • English manuscripts use the Springer template. • Chinese manuscripts use the Journal of Computer Science template. Accepted full papers will be presented as posters at the conference.

2. Extended Abstracts
A forum for sharing work already published within the past year at major venues (e.g., ACM CHI, UIST, CSCW, IEEE VIS, SIGGRAPH, CVPR, etc.). Submitted abstracts are not included in the proceedings; indicate “Extended Abstract” upon submission.

3. Demonstrations
Showcase novel interactive technologies and user experiences. Submissions should include a demo video and a one-page description (no strict format).

4. Submission Portal
All submissions are handled via the CCF system: https://conf.ccf.org.cn/HHME2025/paper

Papers that are finally accepted have the opportunity to be published in the Springer proceedings (EI indexed).

Program Chairs:
• Xin Yang, Dalian University of Technology (xinyang@dlut.edu.cn)
• Ye Tao, Zhejiang University City College (taoye@zucc.edu.cn)

Demo Co-Chairs:
• Yulong Bian, Shandong University (bianyulong@sdu.edu.cn)
• Qi Wang, Tongji University (qiwang@tongji.edu.cn)

Since the 1990s, pervasive computing has evolved from a concept into a new computing paradigm built on advances in distributed systems, mobile computing, embedded devices, location services, and sensor technologies. It aspires to deliver always-on, everywhere, and invisible computing—with ubiquity, convenience, and adaptability at its core. Ubiquity refers to ubiquitous environmental sensing, pervasive network access, and diverse human–environment interactions; convenience denotes natural, effortless access to rich computational services; adaptability means systems perceive and adapt to changing contexts automatically. As an international academic forum, PCC 2025 invites researchers, designers, developers, and practitioners to submit original work and participate in discussions on the latest progress in design, development, deployment, evaluation, and understanding of pervasive computing systems.

To foster broader exchange and raise quality, PCC 2025 will be held jointly with the 21st China Conference on Human–Computer Interaction (CHCI 2025) as part of the 21st Harmonious Human–Machine Environment Conference (CCF HHME 2025). Hosted by Dalian University of Technology, the event will take place August 21–25, 2025 in Dalian, China.

1. Submission Types & Requirements:
   • Regular Full/Short Papers, Extended Abstracts, and Invited Experience Papers are all accepted.
     – Regular Papers (8–10 pages for full, 4–6 pages for short; CCF double-column template). Only full papers are eligible for the Best Paper Award.
     – Extended Abstracts (1 page; English or Chinese). May be upgraded to full/short paper by June 30 to enter award competition.
     – Invited Experience Papers: Work published within the past year in top conferences or journals (e.g., ACM UbiComp/IMWUT, MobiCom, MobiSys, SenSys, IEEE PerCom, JSAC, TMC, TON). Select “Experience Paper” and upload proof of acceptance.
2. Submission Portal:
   All submissions via the CCF system: https://conf.ccf.org.cn/HHME2025/paper


Papers that are finally accepted have the opportunity to be published in the Springer proceedings (EI indexed).

• Pervasive Computing Theory & Models
• Context-Aware & Ubiquitous Computing
• Pervasive Systems & Platforms
• Pervasive Devices & Connectivity
• Intelligent Sensing Technologies
• Human–Environment Interaction

• Internet of Things
• Natural Interaction Interfaces
• Pervasive Computing Applications
• Big Data & AI in Pervasive Computing
• Security & Privacy in Pervasive Systems
• Edge & Fog Computing

Program Chair: Zhu Wang, Northwestern Polytechnical University (wangzhu@nwpu.edu.cn)

Co-Chair: Xuan Liu, Hunan University (xuan_liu@hnu.edu.cn)