BEIJING, Sept. 11 (Xinhua) -- Beijing's Palace Museum, also known as the Forbidden City, has released the 2019 Palace Museum Calendar.

The calendar has been one of the museum's most sought-after souvenirs since 2010.

This year's calendar, released Monday, is themed on the Chinese zodiac year of the pig, featuring artifacts related to pigs at the Palace Museum.

The content was carefully selected by research fellows at the museum in order to present the essence of traditional Chinese culture.

The calendar is now available for sale, with over 700,000 copies having been printed. Special editions such as customized and bilingual editions are also available, said Shan Jixiang, director of the Palace Museum.

Last year, 680,000 copies were sold.