The Weapons I Made Have Their Own Sword Energy

Majoring in blacksmithing and minoring in enchanting. In this era of unemployment after graduation, I found a stable job - building magic tools for gray companies. "Your target today is one hundred swords. If you don't finish, I will not only deduct this month's salary, but I will also hack you to death." Why does the sword I crafted show proficiency? "Congratulations on creating a white magic weapon [making a normal long sword] and gaining additional attributes: attack distance +1" Ye Feng: "Damn it, the basic attack brings sword energy."