Map showing Khurnak fort in Aksai Chin
The boundary between India and China was considered to be at the Khurnak Fort and Indian forces visited it from time to time and had a post there. China has controlled the Khurnak Fort since July 1958, according to most sources. However two sources give earlier dates for establishment of Chinese control: June 1958 and the early 1950s. 
During the 1960 talks between the two governments on the boundary issue, India submitted among other official records as proof of jurisdiction, the 1908 Settlement Report regarding revenue in kind, which showed the amount of revenue collected at Khurnak. The Chinese claim line of 1956 did not include the Khurnak Fort, but the 1960 claim line included the Khurnak Fort.
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