This document summarizes a translation agreement between Ching-Chen Mao, an associate professor, and Dr. Barbara Malina. Mao is granted the right to translate Dr. Malina's preface to the book "Open Access – Opportunities and challenges – A handbook" into simplified and traditional Chinese, and to publish and distribute the translation in print and digital formats. Mao agrees to accurately translate the work without changes, and translation will be done without financial compensation as it is intended to promote open access. Copyright of the original work remains with Dr. Malina.