Hanification refers to the process by which the Han Chinese cultural and social practices spread and assimilate non-Han ethnic groups within China, often leading to the adoption of the Han language, customs, and identity. This phenomenon has been historically significant, particularly in regions like Tibet, Xinjiang, and Inner Mongolia, where local cultures have been influenced or marginalized by Han culture. The term is often discussed in the context of ethnic relations, nationalism, and the dynamics of cultural assimilation in modern China.