2. Improve teaching skills: the master knows the apprentice's situation and foundation in advance, clarifies the teaching focus, the preparation of materials and tools, and emphasizes the importance of work items to the apprentice to attract the apprentice's attention or interest.
3. Implementation of teaching and training: In order to prevent teachers and apprentices from deviating from the original teaching plan in their busy and trivial work, trainers should use forms and regular communication meetings to follow up the implementation of teaching.