(Topics include but are not limited to)
Topic 1: Railway Engineering
Track engineering
Roadbed engineering
Bridge engineering
Tunnel engineering
Station engineering
mechanical engineering
Signal Engineering
Locomotive Engineering
Vehicle Engineering
Railway track
Railway survey and design
Railway construction
Railway maintenance
Railway reconstruction
Excavation project
Filling project
Compaction Engineering
Roadbed earthwork engineering
Pile foundation engineering
Pile cap engineering
Pier and abutment engineering
Unit project
Branch project
Sub item project
civil engineering
mechanical engineering
Signal Engineering
Railway lines
station
signalling system
Power system
communication system 
Construction of high-speed railway engineering
Electric traction
diesel traction 
Steam traction
High speed rail crew
Railway Engineering Technology
Railway communication signal
Railway transportation operation management
Railway locomotives and rolling stock
Construction Engineering Technology
Railway power supply
Railway signal
Railway communication
Rail car driving and maintenance
Topic 2: Rail Transit
Maglev train 
Urban Rail Transit
train
Railway
Vehicle maintenance
Equipment operation management
Mechanical Engineering and Automation
Urban Rail Transit Vehicle Engineering
electronic information engineering
Urban rail transit communication signal
Transportation
Urban rail transit operation and management
traffic engineering 
Urban Rail Transit Engineering
Traditional railway
Intercity rail transit
Urban Rail Transit
double-track railway
monorail
Groove railway
Ordinary railway
Intercity railway
Urban railway
high-speed railway
Subway system
Light Rail System
tram
Magnetic levitation track system
Monorail system
New type of rail transit
Heavy duty track
Light rail
High speed rail
Medium low speed orbit
Topic 3: Engineering Materials
Metallic materials
Non metallic materials
Polymer materials
compound material
Organic synthetic materials
Black metal material
Nonferrous metal materials
Material Physics
Materials Chemistry
Metallurgical Engineering
Metal Materials Engineering
Inorganic Non Metallic Materials Engineering
Polymer Materials and Engineering
Composite Materials and Engineering
Powder Materials Science and Engineering
Gemstone and Materials Technology
Materials Science and Engineering
Plastic
rubber
Synthetic fiber
Refractory materials
Fire resistant insulation material
Corrosion resistant (acid resistant) non-metallic materials
ceramic material 
Light metal
Fusible metal
Refractory metal
noble metal
Rare earth metals
alkaline-earth metal
Alloy materials
Metal Experiment and Theoretical Research
Metal laser additive manufacturing
Deformation and Phase Transformation of Metal Materials
Metal smelting, preparation and processing, protection
Special metal functional materials
High end metal structural materials
High performance metal based composite materials
Frontier Metal New Materials
polymer