What is the fine-grained topic of the following text: Taiwanese Foreign Minister James C. F. Huang visited Costa Rica this week to make official his country’s $15 million gift to the Social Security System (Caja) to construct a new building for San José’s Calderón Guardia Hospital, which suffered major destruction in a fire last year (TT, July 15, 2005). Only return the topic.
Taiwan's financial aid for reconstruction of Calderón Guardia Hospital in Costa Rica.