The spokesperson stressed that in 1945, Japan signed the Instrument of Surrender, explicitly undertook to carry out the provisions of the Potsdam Proclamation in good faith and unconditionally return Taiwan to China. China resumed exercise of sovereignty over Taiwan and recovered Taiwan both in law and in practice. In 1949, the PRC government replaced the ROC government. This is a change of government in which China, as a subject under international law, did not change and China’s sovereignty and inherent territorial boundaries stayed unchanged.