Ma Lin felt that there should be a spool with cables wrapped around it.
Then there was someone holding a long stick in their hand, with a ring on which the cable passed through.
This person held the stick high, laying the cable for the electric tractor and followed the tractor to prevent the cable from getting scratched on the ground.
The insulation measures of the cable must be reliable enough. For instance, it could be divided into many layers.
If one person is not enough to take care of the cable, then assign two people.
Anyway, taking care of cables is times easier than pulling a plow manually.
Qualified and usable generators and electric motors are already available.
The next step is to invent the actual crane, plow, and combine harvester.
The crane has a wheel that can wrap around the iron chain.
The wheel's axle is driven by an electric motor.
How is it driven?
Driven by meshed gears?
Logically, this is a method.
The electric motor turns forwards and backwards.
