The official name of the country in English is the "Republic of China"; it has also been known under various names throughout its existence. Shortly after the ROC's establishment in 1912, while it was still located on the Chinese mainland, the government used the short form "China" ('''' ()) to refer to itself, which derives from '''' ("central" or "middle") and '''' ("state, nation-state"), a term which also developed under the Zhou dynasty in reference to its royal demesne, and the name was then applied to the area around Luoyi (present-day Luoyang) during the Eastern Zhou and then to China's Central Plain before being used as an occasional synonym for the state during the Qing era.