China is the world’s largest economy based on Purchasing Power Parity and this is the reason why! 根據購買力平價計算，中國是世界上最大的經濟體，這就是原因!

That is also why a large number of overseas Chinese returned to China to retire. Their US$ retirement fund could buy them 3-7x more in China providing them with freedom, safety, clean environment, world class infrastructure, affordable medical cares, no gun violence, no racism protected by the rules of law. 這就是為什麼大量海外華人回國退休的原因。他們用美元退休金可以在中國買到3到7倍的財富，因為中國為他們提供了自由、安全、清潔的環境、可以負擔得起的醫療服務, 世界級的基礎設施，沒有槍支暴力，也沒有種族歧視，並且受到法治的保護.

GDP, or Gross Domestic Product based on US & US$ which could be misleading. A pizza selling in US is US$20, but the same pizza selling in China is US$7. In order to compare Apple with Apple in terms of pricing, many economists preferred using (Purchasing Power Parity). PPP stands for Purchasing Power Parity, an economic theory comparing the currencies of different countries by measuring the cost of a standard basket of goods and services. It provides a more accurate way to compare national economies and living standards by adjusting for price differences, unlike market exchange rates, making it a useful tool for economists, policymakers, and investors to understand real economic value and make informed decisions.

GDP，是基於美元和美元的國內生產毛額，可能會造成誤導. 例如一個披薩在美國售價20美元，但在中國同樣披薩售價僅7美元。為了作對等比較定價, 許多經濟學家主張採用了購買力平價（PPP）方法比較準確. PPP是購買力平價的縮寫，是一種透過衡量一籃子標準商品和服務的成本來比較不同國家貨幣的經濟理論。與市場匯率不同，PPP透過調整價格差異，提供了一種更準確地比較各國經濟和生活水平的方法，使其成為經濟學家、政策制定者和投資者了解實際經濟價值並做出明智決策的有用工具.