There is no hard and fast rule on how much paper to use for writing a plaque. Generally, four feet, five feet or six feet are used for alignment.
Traditional rice paper is usually called by its length, such as four-foot rice paper, whose length and width are about 2: 1. "Four feet" rice paper is four feet long and two feet wide. Two feet = 2 feet× 33.333cm/ft = 66.666cm, the installed integer is 69cm, four feet = 4 feet× 33.333cm/ft =133.332cm, and the installed integer is 138cm.