1. Special weapon cleaner: responsible for cleaning, inspecting and maintaining major weapons, including ammunition, guns, explosives, flame throwers, etc.

2. Air flight repairman: A professional with high quality and knowledge of electronics and mechatronics is required to be responsible for inspecting, overhauling and maintaining various aircraft safety equipment;

3. Land bomb disposal workers: responsible for determining the types of underground bombs, and finally dismantling the bombs to ensure a relatively safe environment;

4. High-altitude cleaner: responsible for cleaning impassable high-altitude windows, and need to go barefoot and lie on the high-altitude cliff outside the building;

5. Wetland deforestation engineer: responsible for starting projects in wetlands, beaches or dense woodlands;

6. deep sea fishing people: You need math, physics and marine knowledge to dive in the deep blue sea to catch some deep-sea treasures;

7. Buried object digger: responsible for starting digging in the huge underground depth, so as to dig out some extremely complicated and difficult objects.