The Library of Congress consists of Jefferson Building, Adams Building and Madison Building, which are named after three American presidents respectively: the main building is called Thomas Jefferson Building, the second floor is called john adams Building, and the third floor is called james madison Building. At first, the Library of Congress was only used by Congress, but later it was opened to the public. Now, anyone with official identification at the age of 17 can apply to the Library of Congress for a free reading card. In the Asia Department of the Jefferson Building of the Museum, there are four departments, namely, China, Japanese, Korean and Southeast Asia, which specialize in collecting collections related to oriental culture. The Chinese Department of the Asian Department of the Museum collects more than 50,000 kinds of ancient rare books in China and more than 60,000 copies of 4,000 kinds of local chronicles in China, including more than 0/00 kinds of isolated books. The Chinese Department also includes written materials of China ethnic minorities, including more than 200 kinds of Tibetan woodcuts, more than 400 kinds of Manchu materials and more than 3,000 kinds of Yunnan Naxi Dongba materials. The Chinese Department also collected about 5,000 living records of China's politics, economy, literature, art, drama and ballads during the Anti-Japanese War of 1938+0945. Today, the Library of Congress in the United States still collects various China classics, and buys a large number of books, periodicals and newspapers from Chinese mainland, Taiwan, Hong Kong and Macao every year, enriching the stacks in China.