1. technical training: training of engineers' professional skills and knowledge to improve their technical ability, including training in software programming and engineering design.

2. Project management: training engineers how to maximize the value in the project, how to manage the project, how to estimate the construction period and cost, etc.

3. Communication skills: Engineers need to communicate with customers and other team members and train engineers on how to communicate and coordinate effectively.

4. Teamwork: Train engineers how to cooperate with team members and effectively divide their work to achieve project goals.