Training materials are generally embodied in the form of words, and some may add some pictures. This is a typical written work, which belongs to the jurisdiction of copyright. If you have created training materials, it is recommended that you register with the copyright-related administrative department first to safeguard your rights and interests. At present, because of the fierce competition among educational institutions, it is not uncommon to steal teaching materials from each other. If you have a registration certificate, you can defend your rights or handle the corresponding disputes.
For details, please refer to: Zhejiang Copyright Protection Network.