Chinese New Year or Spring Festival is the most important of the traditional Chinese holidays. It is often called the Lunar New Year, especially by people in mainland China and Taiwan. The festival traditionally begins on the first day of the first month (Chinese: pinyin: zhng yu) in the Chinese calendar and ends on the 15th; this day is called Lantern Festival. Chinese New Year's Eve is known as Chx. It literally means "Year-pass Eve." Chinese New Year is the longest and most important festivity in the Lunar Calendar. The origin of Chinese New Year is itself centuries old and gains significance because of several myths and traditions. Ancient Chinese New Year is a reflection on how the people behaved and what they believed in the most. Celebrated in areas with large populations of ethnic Chinese, Chinese New Year is considered a major holiday for the Chinese and has had influence on the new year celebrations of its geographic neighbours, as well as cultures with whom the Chinese have had extensive interaction.