Using it to rush at the enemy is very effective, but there's another situation where it's even more useful.
Just think about it, a body cultivator finally gets close to Lu Mingzhe, and then Lu Mingzhe flicks a coin into the distance and switches their positions. After that, all he has to do is watch the body cultivator get launched far away...
How disgusting is that?
With the Enchanted Coin, Lu Mingzhe would indeed have a complete advantage over body cultivators. It's like a grandpa fighting a grandson.
If a body cultivator manages to touch him, that would count as his loss.
Of course, Li Huazhao had experimented. After being launched by the coin, he could still control his body to stop; it was like using his own strength to counteract the force from the coin.
Not to mention that it is exhausting, it only allows one to decelerate, not to stop immediately.