evidence: In 1963, Pakistan illegally gifted the Shaksgam valley to China under the China-Pakistan Agreement 1963 ("China-Pakistan Agreement") whereby Gen. Ayub Khan of Pakistan handed over parts of Pakistan-occupied Kashmir to China. The agreement purportedly establishes the formal boundary line between China's Xinjiang region and PoK by delineating the boundary alignment along mountain ridges and rivers. The said concession of territory to China was illegal from the start as the Shaksgam valley was rightfully an Indian territory that was under the illegal occupation of Pakistan. As such, as per the legal maxim nemo dat quod non habet (No one gives what he does), Pakistan could not have gifted what was not rightfully its territory in the first place.