While Li Zheng was engrossed in solving problems,
he had no idea that Jiang Qinghua had already been frantically grabbing his hair for a long time.
The Sun? Nuclear fusion? Nuclear reaction equations?
Jiang Qinghua, confused.
The more confused he became, the more he was bewildered by the frightening facade of the problems.
The more confused he became, the harder it was to discern the simple and pure approach to solving them.
After an unknown period of disarray, Jiang Qinghua glanced at the second question.
This was a classic physics problem involving a ball hitting a rod, calculating kinetic energy and velocity.
This is good, there's a routine.
Just apply the formulas for conservation of kinetic energy and momentum, and you're set.
However, he was wrong.
He didn't realize that in physics competitions,
the scarier a problem seems, the simpler it actually is.
It's the what-seems-to-be-simple matters of balls and rods, the imbecilic stuff, that are actually harder.