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 Regalia where they were exhibited in the Katharinenkirche. In the Second World War they were stored for protection from air raids in the "Historischer Kunstbunker" () beneath Nuremberg Castle. In 1945 the imperial regalia were found there by US soldiers and were brought back in 1946 to the Hofburg in Vienna. Imperial Regalia The Imperial Regalia, also Imperial Insignia (in German "Reichskleinodien", "Reichsinsignien" or "Reichsschatz"), are regalia of the Holy Roman Emperor. The most important parts are the Imperial Crown, the Holy Lance and the Imperial Sword. Today they are kept at the Imperial Treasury in the Hofburg palace in Vienna,