[Gravity Etching] as a professional battle skill companion of [Fallen Blade Hunting], became one of Xia Nan's daily training items after his level up.
On one hand, its inherent limitation of "3" uses, coupled with the special mechanism of recharging every six hours, makes this battle skill relatively easy to train.
All that's needed is to manage the recharge time and use the charges accordingly, allowing the skill level to increase far more efficiently than other battle skills.
On the other hand, it's also because of the exceptional effect of [Gravity Etching].
Compared to the battle skills like [Vortex Slash] and [Teeth Hunting] that emphasize physical skill and technique, [Gravity Etching] is more akin to an "enchantment."
It concentrates pure energy on the surface of a weapon, providing a singular, substantial burst of damage for an attack.
And more critically, the type of damage it causes is "force field damage."
