1, saying "expressing concern" or "expressing serious concern" about something means that the government will take tough steps;
2, saying "can't be indifferent" or "can't be ignored" is a hint to the other party that if the situation continues to deteriorate, the government will intervene;
3, saying that "we will have to reconsider our position carefully" contains a warning that friendly relations will soon become hostile;
4, it is said that the talks are "beneficial", and the implication is that the talks have not achieved concrete results;
5. To say that a diplomat "engages in activities inconsistent with diplomatic status" is to accuse the other side of espionage.