What happened to the slow change of diplomatic relations in Qing Dynasty?

The slow change of diplomatic relations in Qing Dynasty was a change from the traditional tributary system to the modern diplomatic system.

Before the Opium War, the diplomatic system of the Qing Dynasty was basically a traditional tributary system. After the Opium War, the Qing Dynasty began to gradually get involved in the global capitalist market, and its majesty was constantly lost, so the diplomatic issue became an urgent problem. In order to cope with this situation, the diplomatic system of the Qing Dynasty began to change.

The central diplomatic institutions of the Qing Dynasty also experienced the replacement from the Ritual Department and Li Fan Academy to the Prime Minister's yamen and the Foreign Affairs Department. This change was slow, because the attitude of opening to the outside world in the Qing dynasty began to turn to closed doors, which led to the country gradually derailing from the outside world, becoming weaker and weaker, and finally being invaded.