世界各国的黄金，都放在美国，中国不但也放了，而且还不少

Group 1 - Currency issuance is determined by a country's economic level, and excessive printing can lead to devaluation and inflation [1] - Historical examples include Venezuela and Zimbabwe, where hyperinflation rendered currency nearly worthless [3] - The Bretton Woods system was established post-World War II to stabilize global currencies, linking them to the US dollar, which was backed by gold [5] Group 2 - The Bretton Woods system was created to address post-war currency chaos, leading to the establishment of the IMF and World Bank [5] - Over 70% of global gold reserves were concentrated in the US under the Bretton Woods system, despite the US holding less than 5% of its own reserves [6] - Countries, including China, stored significant amounts of gold in the US, but began withdrawing it as geopolitical tensions rose [6]