The ontological concepts for 1,256 Mandarin metaphor types (such as cheng2zhang3 ‘grow/growth’ and jian4she4 ‘construct/construction’) were stored in a database in the form of metaphor-concept pairings. In each pair, a Mandarin metaphor type is paired with ontological concepts in English. Based on the relations given in these pairings, a database of relational concept was created. Calculation of co-appearance of concepts can be undertaken using the database. The work will contribute to analysis of conceptual relatedness, semantic networking and relatedness of Mandarin metaphors.