After exhausting all my efforts, I finally drilled all sixteen holes, inserted the spokes, and then attached the wheel rim.
The spokes needed to be inserted into the eyes of the wheel rim.
There was a certain deviation in the pre-drilled eyes.
If Ma Lin had an electric drill, he wouldn't worry about drilling eyes.
But he didn't have an electric drill.
He only had a square drill bit, turned by hand.
He really wanted to make a bow drill, but he had no idea of the principle.
While drilling, he suddenly thought of something.
That was, he had both sulfur and nitrate, and also charcoal.
He could completely try some highly powerful stuff.
However, that being said, if firearms are of poor quality, their destructive power is less than a powerful crossbow.
Such a crossbow, which requires leg or waist strength to string, can cause fatal injuries to large animals like tigers, black bears, and wild cattle.
He also had iron arrowheads.
