The term "Sino-Vietnamese" refers to the cultural, linguistic, and historical connections between China and Vietnam. This relationship has influenced various aspects of Vietnamese society, including language, religion, and governance. The Vietnamese language incorporates a significant number of words derived from Chinese, particularly in formal and literary contexts. Historically, Vietnam was under Chinese rule for over a millennium, which shaped its political structures and cultural practices. The influence of Confucianism and Buddhism from China also played a crucial role in shaping Vietnamese philosophy and ethics. Today, Sino-Vietnamese relations continue to evolve, impacting trade, diplomacy, and regional security.