Isn't Mastery of All Elements a Required Course for Magic Swordsmen?

As the saying goes, if you have a gun but don't use it, you can't become a great master. In the same way, in a grandmaster duel, it makes sense to bring some quicklime, right? Duanmu had the right time and place, but he was still no match for Huangfu Yunchuan. The defeated Duanmu fell into the lake. When he woke up again, he found that the outside world had changed drastically. Priest, Paladin, Dragon Knight, Ranger, Rogue, Assassin, Berserker, Swordsman, Magic Swordsman, Warlock, Necromancer, Alchemist, Bard, Druid, Mechanic, Puppet Master, Medium... He could understand the growing number of professions. But what is a steam train? What the hell are steam weapons?