I have read that the proposed solution included China giving up claim on Arunachal Pradesh(de facto Indian territory, South Tibet as per PRC) and India giving u

I have read that the proposed solution included China giving up claim on Arunachal Pradesh(de facto Indian territory, South Tibet as per PRC) and India giving up claim on Aksai Chin(de facto Chinese territory, part of Ladakh as per India). Not sure why it was not pursued. Maybe India's relations with Pakistan were a factor.