Subtle use, legal communication.
Carry your operating license and radio license with you.
Even if it's a Shanghai Stock Exchange-listed company, you shouldn't be too boastful.
Do not use the Shanghai Stock Exchange (SSE) equipment in public places.
Regardless, do not operate a radio in non-amateur frequency bands in public places.
Do not use in sensitive areas (airports, train stations, ports, military facilities, crowded public places, and public transportation).
If approached by an official conducting a check, cooperate fully. (Regardless of whether the official has the authority to do so).