With the arrival of China's navy's dual carrier era, which country's tactics no longer have patents?

America. China's navy has entered the era of "double carriers", which indicates that China's maritime military strength has made great progress. The introduction of dual aircraft carriers has brought China Navy a variety of tactical options, and also provided China with more options and strategic adjustment space when dealing with various maritime threats. For a period of time, the US Navy has been the most powerful maritime force in the world, and its carrier battle group has safeguarded national interests all over the world. However, with the increasing strength of China's navy, this situation is changing. China's navy already has two aircraft carriers, and the cooperative operation of the two aircraft carriers is no longer a patent of the United States.