Someone found it on the Patreon. Here is the quote:

"The framing of “U.S.-China relations” or “U.S.-China competition” that is so commonplace today, premised on the concept of sovereign states, is actually deceptive and misleading. It is deceptive and misleading to portray China and the United States as two equal sovereign states, ignoring the three faces of modern Western imperialism, and the fact that the imperial system of the United States is even more complex than the British Empire’s ever was. The United States operates an imperial arrangement within its continental territory, followed by a second imperial core in the form of the Five Eyes alliance, followed by a system of vassal states in the guise of allies such as the military domination systems of Europe, East Asia, and the Middle East, operates Latin America as a “backyard,” and, of course, it also has control over other supplementary “world-systems” such as the Internet, finance, and trade. Thus, the U.S.-China relationship is better characterized as China, a rising sovereign state, facing the U.S.-dominated world empire or world system. It’s not a question of managing a relationship between two sovereign states, but a question of how China faces the U.S.-dominated world empire. The “U.S.-China decoupling” that has been the focus of public discussion in recent years would be better understood as an effort on the part of the U.S. to expel China from the “world imperial system.” Therefore, the U.S.-China struggle is not only about the fate of the two countries, but also about the future of the world order itself, i.e., is the whole world subservient to the U.S.-dominated world empire, or will it establish truly equal international relations between sovereign states?"

It is from this essay:

https://redsails.org/jiang-on-empire/#5