Original sentence: Accordingly China refused to recognize the entire Macmahon line (or, for that matter, any treaty signed by Tibet).China, which at that time did not recognize Tibet's Sovereignty but rather considered Tibet to be part of China, did not accept the agreement reached between Tibet and British India
Edited sentence: At that time,Tibet's Sovereignty belonged to China,and China didn't accept the result between Tibet and British India.China always refused to recognize the entire Macmahon line and all the treaties on boundary signed by Tibet