There is insufficient evidence to prove that Congress surrendered to China in1962.
Following the events, the then prime minister of India, Pandit Jawaharlal Nehru, addressed everyone via the All India Radio, which also contained a condolence message to the people of Assam after the fall of Bomdila. Some people interpreted this as a message of surrender to the Chinese. Some Congress leaders also said that the prime minister had been misunderstood.
Present Union Minister Kiren Rijiju said that Nehru was an intense ray of unilateralism and that Nehru was a significant contributor to making China policy and Indian surrender to the Chinese in 1962.
However, there is no evidence to prove whether congress had surrendered to China during the Indo-china war in 1962 as there is no proper evidence available to verify it.