A more thorough explanation:

Consular relations refer to the relationship established between two countries through the functions of consuls on behalf of the sending state within the territory of the receiving state. This means that a consul from one country is sent to another country to represent their government and help their citizens who are living or traveling in that country.

For example, if a citizen of the United States is traveling in France and needs help with a legal issue, they can go to the U.S. Consulate in France for assistance. The U.S. Consulate is considered part of the U.S. government and is responsible for helping U.S. citizens in France.

Consular relations are important for maintaining good relationships between countries and ensuring that citizens are protected when they are abroad.