Hi, and thank you for your interest!
OpenOrienteering is being translated using Weblate, a web tool designed to ease translating for both developers and translators.
Translation project for OpenOrienteering into Chinese (China) currently contains 1319 strings for translation and is 0.1% complete.
If you would like to contribute to translation of OpenOrienteering, you need to register on this server.
Once you have activated your account just proceed to the translation section.