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Shin spent quite a lot of time trying different kinds of weapons until he found what was the best to learn from. He first thought that the weapons used for quickness were much easier to learn compared to the rest, but he later found that he was wrong.
After learning that he might take much longer than he thought, Shin tried the weapons on the other piles to see if he could grasp their characteristics and other properties better. After testing everything, he realized that he was surprisingly more proficient in handling heavy weapons aside from the katana.
Realizing this, Shin picked a huge mace and started swinging it with both of his hands. He wanted to see what would happen if he swung these weapons a thousand times like what Old Ryong had said.