蕴含 (yùn hán) means 'to contain' in an abstract, deep sense — like emotions, meaning, or potential hidden within something. It is more literary than 包含 (bāo hán 'to include, contain'), which is used for concrete or enumerable items, and differs from 蕴藏 (yùn cáng 'to store up'), which suggests natural resources or reserves hidden underground.