Don't Enter The Jianghu
Preferred Weapon is OK but over Specialising in Only knowing how to use one Weapon IS just Stupid, what if you lose your Weapon, or it gets broken and you can't find a replacement, or your in an environment that stops you from using it or fighting something resistant to that type of Weapon, your stuffed. Should at least Learn these Skills as well as your Preferred Weapon Skill - Basic Unarmed Skills, would allow you fight somewhat till you find a replacement Weapon or possibly help you to disarm someone for their Weapon. Learning at least Basic Knife Skills would be good because you can easily carry several and they can often be used in conjunction with other Weapons and are good in confined areas and can be thrown. A Basic Knowledge of at least one Ranged Weapon is a good idea and maybe Basic Skill in another Common that is quite different from your Chosen Weapon, for instance if your go to Weapon is a Cutting then maybe Learn Basics of a Blunt Weapon. Rudimentary Basic Pole Weapon Skill (a Spear, Staff or Halberd) might be useful as well.