Clock face introduction: In the old days, there were three large clocks with different functions hung on the tower, namely the alarm clock, the fire alarm clock, and the death penalty bell. In 1712, the chime clock was replaced by a larger and new wall clock, and the death knell was soon removed, leaving only the fire alarm bell still hanging in place. Unlike other clocks that people have seen, the long hand of this clock represents the hour hand, and the short hand represents the minute hand.