This day, 26 December, in 1962, the China-Mongolia Boundary Treaty was signed in Beijing by Premier Zhou Enlai and General Secretary Yumjaagiin Tsedenbal on behalf of the Chinese and Mongolian governments, respectively. The treaty stipulated the location of all border lines between the two countries, formally delimited the China-Mongolia border and properly resolved border issues left over from history.
1962年12月26日的这一天，周恩来总理和总书记Yumjaagiin Tsedenbal分别代表中国和蒙古政府在北京签署了《中蒙边界条约》。 该条约规定了两国之间所有边界线的位置，正式划定了中蒙边境，并妥善解决了历史上留下的边境问题。
