(The following topics include but are not limited to)
Topic 1: Environmental Science
Basic Theory of Environmental Science
Environmental Chemistry and Biology
Environmental Geology and Soil Science
Environmental Physics
Environmental Ecology
Environmental Toxicology
Environmental monitoring technology and methods
environmental quality assessment
Environmental Planning and Management
Atmospheric Environmental Science
Water Environment Science
Soil Environmental Science
Marine Environmental Science
Urban Environmental Science
Rural Environmental Science
Global environmental change
Environmental remediation technology
Environmental risk assessment
Environmental policies and regulations
Environmental Information System
Environmental big data analysis
Environment and Health
Environmental standardization
Polar Environmental Science
Topic 2: Energy Engineering
Basic Theory of Energy Engineering
Development and Utilization of Renewable Energy
Solar photovoltaic and photothermal technology
Wind power generation technology
Hydroelectric power generation technology
Biomass energy conversion
Geothermal Energy Development 
Ocean energy development
Hydrogen and Fuel Cell 
Energy storage technology and applications
Distributed Energy System
Energy Internet technology
Smart Energy Management
Energy system optimization and scheduling
Energy efficiency improvement technology
Energy data collection and analysis
Energy Forecasting and Planning
Energy equipment status monitoring
Energy system simulation modeling
Energy Economy and Policy
Energy Security and Risk Management
Energy standardization
Energy project development
Topic 3: Internet of Things
Internet of Things Architecture and Standards
Internet of Things Perception Layer Technology
Internet of Things Network Layer Protocol (6LoWPAN/RPL)
Internet of Things Application Layer Protocol (MQTT/CoAP)
IoT Platform and Middleware
IoT data collection and management
IoT device configuration and discovery
Optimization and Management of Energy Consumption in the Internet of Things
IoT Security and Privacy Protection
IoT interoperability and compatibility
Internet of Things edge computing and AI
Industrial Internet of Things (IIoT) technology
Smart City IoT Applications
Smart Home IoT System
Agricultural Internet of Things and Precision Planting
Medical and Health IoT Applications
Logistics Internet of Things and Supply Chain Tracking
Connected Vehicles and Intelligent Transportation
Energy Internet of Things and Smart Grid
Low Power Wide Area Network (LPWAN) for the Internet of Things
IoT testing, verification, and simulation
Design of IoT chips and modules
IoT data fusion and mining
Internet of Things and Digital Twin