Modeling, simulation theories, methods, technologies, and achievements in engineering applications.1. System simulation, current status and development trends of system simulation technology; 2. Digital twin and metaverse; 3. Modeling and simulation theory and methods; 4. Simulation modeling and simulation algorithms; 5. Simulation systems and simulation system engineering; 6. Simulation computers and simulation software; 7. Artificial life and intelligent simulation; 8. Simulation theory, methods, platforms, and technologies based on cloud computing and big data science 9. Modeling and simulation of aviation, aerospace, and equipment; 10. Electrical engineering, energy and power modeling and simulation; 11. Mechanical, robotics, manufacturing, assembly modeling and simulation; 12. Modeling and simulation of agricultural systems, agricultural engineering, and digital environment engineering; 13. Safety engineering modeling and simulation, disaster simulation ;14.others