Imperial units commonly used units for length are (li), (tseung/cheung), (tsek/chek), (tsun/chun), (fen/fan) in descending scale order. These units are now rarely used in daily life, the imperial and metric systems being preferred. The imperial equivalents are written with the same basic Chinese characters as the Chinese system. In order to distinguish between the units of the two systems, the units can be prefixed with "Ying" () for the Imperial system and "Wa" () for the Chinese system. In writing, derived characters are often used, with an additional (mouth) radical to the left of the original Chinese character, for writing imperial units.
Imperial Guard (Warhammer 40,000) had a name change to the Astra Militarum in line with Games Workshop's shift away from generic naming of their intellectual property. The Imperial Guard (previously the Imperial Army, now the Astra Militarum) is a fictional colossal military organisation, consisting of many hundreds of thousands of armies throughout the Imperium, and forming the vast bulk of the Imperium's military machine. Unlike the Space Marines, who are an elite unit that rely upon precision strikes against the enemy's critical assets to carry the day, the Imperial Guard has the reputation of relying on massed assaults made up of endless waves of