This reward activity of 20000U is open for everyone to participate in, and the prize is 400U. I see that the number of participants is not that competitive yet, just go for it!

1. USDD Overview: Evolution from 1.0 to 2.0
USDD is a decentralized stablecoin on the TRON network, pegged 1:1 to the US dollar, ensuring stability through an over-collateralization mechanism. Unlike centralized stablecoins (like USDT), the USDD 2.0 version introduces a 'freeze-free' design, independent audits, and on-chain data transparency to avoid risks from a single entity's control.
Core Mechanism: Collateral assets include TRX, BTC, ETH, etc., with a collateral ratio maintained above 120%. sUSDD is its interest-bearing token, allowing users to earn approximately 12% base APY simply by holding.
Ecosystem Positioning: Integrating TRON, Ethereum, and BNB Chain, supporting DeFi protocols such as JustLend DAO, Uniswap, and Aave.