I haven't done any projects subcontracted by CNNC 23. Can I take it away?

I can't. Projects not subcontracted by CNNC 23 involve all kinds of knowledge and require very strong professional knowledge and rich experience to accept, so projects not subcontracted by CNNC 23 are acceptable. Engineering is the application of science and mathematics. Through this application, we can make the characteristics of natural matter and energy through various structures, machines, products, systems and processes, and make efficient, reliable and useful things for human beings in the shortest time and with the least manpower and material resources.