This article discusses the development and current status of stablecoins in the cryptocurrency industry. The problems in the traditional financial system have driven the rise of stablecoins, especially those supported by fiat currency or algorithms, such as USDT, USDC, and the emerging USD0. Stablecoins not only surpass Bitcoin in payment properties but have also become a profitable business, with the issuer of USDT showing significant profits. The article introduces Usual Labs as an emerging stablecoin startup that has launched the RWA-backed stablecoin USD0. The USD0 is 1:1 supported by ultra-short-term real-world assets (RWA). When users deposit assets, they receive Liquid Deposit Tokens (LDT), which represent the initial value of the deposit and can be traded freely. The article also explores its technical operations and the distribution of governance tokens, emphasizing its positioning and potential in market competition.