建于

建于 is a prepositional phrase meaning 'built on' or 'founded on,' typically used to indicate the foundation or basis of something. It emphasizes the origin or starting point of a structure, idea, or system.

The character 建 (jiàn) means 'to build' or 'to establish,' while 于 (yú) functions as a preposition meaning 'on' or 'at.' Together, they form a fixed expression that highlights the base or foundation of something tangible or abstract.

建于 is commonly used in historical, architectural, and philosophical contexts. For example, it can describe the foundation of a city, a building, or a concept. Understanding this phrase helps learners grasp how Chinese expresses origins and foundations in both literal and metaphorical senses.