Are North East Indians ethnically more related to Indians or Chinese?

North East Indians are ethnically more related to Southeast Asian populations, which includes people from both India and China, but they often share closer cultural and genetic ties with ethnic groups in Southeast Asia, such as the Tibeto-Burman and other Mongoloid groups. This relationship suggests a complex interplay of migration and mixing over thousands of years. While they share some similarities with both Indians and Chinese, their unique heritage reflects a blend of influences from both regions.