This hydraulic device is relatively simple and easy to produce.
It's also easy to install.
For instance, behind the tractor hangs a rotary tiller.
There's a hydraulic lever under the arm.
After connecting the power of the engine, the hydraulic lever gradually extends, lifting the arm higher and higher.
When descent is needed, the hydraulic lever releases fluid.
Even when the release valve is opened, it releases very slowly.
So the arm slowly lowers, and the rotary tiller comes down too.
The hydraulic device was test-produced in a day and a half.
It took a week to find a tractor and install the transmission system.
By this time, spring plowing was nearing its end.
Countless problems arose during the spring plowing process.
Moreover, an outsider primitive was electrocuted and almost died and is still recovering from injuries.
Various machines kept malfunctioning.
But there was a benefit: the manpower used was very little, making it easy for everyone.
