Pakistan had expressed some reservations, with Chinese maps showing parts of Pakistan on their side. Ayub Khan asked for clarification, but no response was received. After Pakistan`s vote to place a seat of China on the UN Security Council, the Chinese withdrew their cards in January 1962 and agreed to start discussions on the subject. Pakistan has welcomed its willingness to reach an agreement. Talks between the two sides officially began on 13 October 1962 and resulted in an agreement signed on 2 March 1963 by Foreign Ministers Chen Yi and Zulfiqar Ali Bhutto of China and Pakistan respectively. As a result, China withdrew from the disputed area following a complaint by Pakistan. It demonstrated the aspirations of the people of both countries for the growth of friendly and fraternal relations that, in the years to come, had to play an aiding role in ensuring world peace. According to Jane`s International Defence Review, the agreement was also important during the Cold War, as Pakistan had ties to the United States and was a member of the Central Treaty Organization and the South Asian Treaty Organization.  The agreement was part of a general strengthening of the Pakistan Association, which led to the secession of Pakistan from the United States.   After the delimitation of the borders, the two countries also concluded agreements on trade and air travel, the latter of which was China`s first international agreement with a non-communist country.
 The Republic of China, currently located in Taiwan and generally known as Taiwan, does not recognize any change in Chinese territory based on border agreements signed by the People`s Republic of China with other countries, including taiwan, in accordance with the Constitution of the Republic of China and its amendments. Pakistan does not recognize the ROC as a state.  The Pakistan-China border agreement for the completion of the Pakistan-China border was signed in March 1963. This agreement has become quite controversial because of India`s refusal to recognize it, because it also claims sovereignty over some of the territories. In addition to this controversy, the agreement has altered the regional balance by bringing Pakistan and China closer together, while weighing on Pakistan-U.S. relations. The border between China and Pakistan had never been demarcated before. Both parties agreed to do so on the basis of tradition. The agreement, which starts from the north-western border of Pakistan at an altitude of 5,630 meters, passes from this point to the east, then southeast along the main tributaries of the Tashkurgan River, on the one hand to the tributes of the Hunza River of the Indus River on the other side, by Kilik Daban, mintake Daban, Kharchanai Daban, Kharchana daban. , the Mutsgila Daban and the Parpik Pass reach Khunjerab Daban. For Pakistan, which had disputes between residents on its eastern and western borders, the agreement made the task easier by protecting its northern border from future competition.
The treaty also provided for a clear demarcation of the border with Pakistan, which would continue to serve as a border, even after the settlement of the Kashmir dispute.  The agreement led China and Pakistan to withdraw from approximately 1,900 square kilometres of territory and a border based on the British note to China, amended by Lord Curzon in 1899, as amended by Lord Curzon in 1905. Indian writers insisted that Pakistan had ceded 5,300 km2 of territory to China (to which they believe it had no rights).