Zhou Youguang's Bookshelf

==Origin==

Zhou Youguang (Chinese: 周有光; pinyin: Zhōu Yǒuguāng; 13 January 1906 – 14 January 2017) was a Chinese economist, banker, linguist, sinologist, publisher, and supercentenarian, known as the "father of Pinyin", a system for the writing of Mandarin Chinese in Roman script, or romanization, which was officially adopted by the government of the People's Republic of China in 1958, the International Organization for Standardization (ISO) in 1982, and the United Nations in 1986.

Effect
Whenever a document is placed on the shelf, whoever placed it there will be able to read it no matter what langauge the document is in.