Roaring

The Great Spear is a colossal and formidable siege weapon

It is unlike any other in the Yan empire arsenal. 

Crafted with a single, massive log-shaped beam, its purpose is straightforward - to pierce through even the mightiest of warriors, especially those who possessed innate strength.

The design itself is ingenious. The spearhead is the Great Spear defining feature.

It has elongated arrowhead-like tip.

Forged from the toughest iron available, this wickedly sharp point was designed to puncture armor, flesh, and bone with ease. 

Its edges gleamed menacingly in the sunlight and glows under the moonlight

The tension mechanism is not something that is so easily replicated even by Aeryon. 

Aeryon has knowledge about siege weapons but he did not have detailed knowledge about it. If he wanted to create the same weapons, he needs someone else to build it for him

But Aeryon did research a bit about the Great Spear