Only 19 years old, he could only watch stealthily from the side while the welders worked.

I felt the craft of welding was beyond reach for me.

I wanted to learn but didn't dare speak up.

But I noticed one thing, the oxygen cylinders they used for welding.

The tall ones stood over 2 meters high and weighed about 95 kilograms.

And even

the lighter ones were about 80 kilograms.

But Ai Aiguo, already 71 years old at the time, accepted it.