Is it illegal for public officials to act as intermediaries in engineering projects?

According to the relevant laws and regulations, the current national regulations on building a clean government and the requirements of public officials' professional ethics, it is not illegal for public officials to act as intermediaries in engineering projects without taking advantage of their powers or positions, but this behavior is a violation of discipline. If you take advantage of your authority or position to obtain illegal benefits from it, it may constitute a serious violation of discipline or even a criminal offence.

There are many laws, regulations and policies in this respect, so I won't list them one by one.