1. Read the relevant policies: read the relevant policies and regulations of Tongji University carefully, and understand the specific process and requirements for part-time directional training personnel to change their work units. This information can be found in the school official website, the training plan or the relevant documents of the personnel department.

2. Contact the relevant departments of the school: contact the personnel department or training management department of Tongji University to consult the specific requirements and handling procedures for changing the work unit. They will provide you with the documents and guidance you need.

3. Preparation of application materials: according to the requirements of the school, prepare application materials, including resume, application form for change of work unit, dismissal or resignation certificate of the original work unit, employment certificate of the new work unit, etc.

4. Submit the application: submit the prepared application materials to the relevant departments of the school and apply according to the procedures stipulated by the school. Ensure that you provide complete and accurate information as required.

5. Follow up the application progress: After the application is submitted, follow up the application progress. Need to supplement materials or further examination and approval procedures, timely cooperate with the requirements of relevant departments of the school. Therefore, if Tongji University wants to change its work unit, it can follow the above steps.