You can not block while dual-wielding. Though you can block while wielding a weapon in your left hand, but not in your right hand.

你在双持时无法格挡。(但是当你左手装备武器时可以格挡，但右手持武器左手是魔法时无法格挡。)

youdao

You can not block while dual-wielding. Though you can block while wielding a weapon in your left hand, but not in your right hand.

你在双持时无法格挡。(但是当你左手装备武器时可以格挡，但右手持武器左手是魔法时无法格挡。)

youdao