Nothing else mattered but the opponent in front of him. The unnatural sound produced by their clashing blades was unbearable, so Jon completely suppressed his hearing not to be affected. He focused all of his other senses on the Night King. As he was furiously trading blows with his foe, Jon noticed a small crack begin to form on the crystalline sword. He began aiming his blows there, and a minute later, the icy blade broke.