The Prime Minister of Canada has reached a new trade agreement with China. In the English-speaking community, Canadian and American netizens are already in a heated debate... Ironically, ten years ago, Canada was almost the most "obedient" ally template for the United States. The Meng Wanzhou incident was at the forefront, followed closely by electric vehicle tariffs, and diplomatic statements never lagged behind. It seemed that as long as one acted quickly and decisively enough, they could earn the certification of being a "core ally." What resulted, however, was a gradual consensus forming in the United States: Canada is not an ally, but rather an expected vassal. Therefore, the significance of China-Canada cooperation has long surpassed trade itself. For all American allies, it serves as a milestone signal. Europe, Japan, South Korea—these countries that have long considered themselves "core allies" may need to reassess a question: When you firmly choose the United States as your ally, you might think you are sitting at the table, but once interests conflict, you will realize that you have actually always been on the menu.