A teller counts yuan banknotes in a bank in Lianyungang, east China&amp;#39;s Jiangsu province on August 11, 2015. China&amp;#39;s central bank on August 11 devalued its yuan currency by nearly two percent against the US dollar, as authorities seek to push market reforms and bolster the world&amp;#39;s second-largest economy. CHINA OUT AFP PHOTOSTR/AFP/Getty Images