AuthorAhYao

Each issue covers one knowledge point – 5/5
What is coin-based valuation?
Coin-based valuation: Using digital currency (such as Bitcoin) directly as the unit of account, investors focus on the relative value between different digital currencies. For example, if Ethereum is priced at 0.05 Bitcoin, it means 1 Ethereum can be exchanged for 0.05 Bitcoin. This method is suitable for investors who hold digital currencies long-term, as it avoids the costs of converting to fiat currency, but it also involves the risk of digital currency price fluctuations.
- U-based valuation: Using stablecoins pegge

Each issue covers one key point –3
1. What is USDC
USDC (USD Coin) is a stablecoin pegged to the US dollar, the second largest stablecoin globally (after USDT).
- Issuer: Circle (a compliant financial company)
- Peg: 1 USDC = 1 USD, with prices stable around 1 dollar
- Essence: Digital US dollar on the blockchain, enabling fast transfers and transactions on-chain
2. Core Features
- 1:1 Reserve: Each USDC is backed by 1 USD in cash, short-term US Treasuries, or other low-risk assets, held at Signature Bank New York
- High Transparency: Audited monthly by the Big Four accounting firms, with publ

Each issue a knowledge point – 4
What is U-based?
"U-based" is a common term referring to a trading model that uses stablecoins (such as USDT) as the unit of account and settlement. Its core features are:
- Unit of account: Uses stablecoins pegged to fiat currency (such as USDT ≈ 1 USD), with minimal price fluctuations.
- Settlement method: Profits and losses are directly calculated in stablecoins, suitable for beginners and short-term traders.
- Advantages: Intuitive operation, no need for frequent conversions.

Each Issue a Knowledge Point – 3
What is the Optimal Price?
The optimal price refers to the price that can achieve maximum benefits or meet specific objectives under certain market conditions and trading scenarios. It is not a fixed value but dynamically changes, requiring comprehensive judgment based on specific contexts (such as commercial pricing, financial investment, etc.).
Core Definitions in Different Scenarios
- Commercial Retail Scenario: When a product can be offered at multiple prices or discounts, the minimum feasible net amount the customer needs to pay (minimum price amount + max

Each Issue a Knowledge Point – 2
What is USDT?
USDT (Tether) is a stablecoin issued by Tether Inc., designed to address the high volatility of cryptocurrency prices, providing users with a relatively stable medium of exchange and store of value.
Core Features of USDT
- Pegged to the US Dollar: Tether claims that for every 1 USDT issued, there is 1 USD held in reserve in a bank account (Note: the transparency and auditing of reserves have previously been controversial).
- Multi-Chain Issuance: Available on multiple blockchains, including Ethereum (ERC-20), TRON (TRC-20), Tron, Bitcoin Cash (SLP

Each issue a knowledge point –1
What is the best price?
The best price (Best Price) is the most advantageous price that can be immediately transacted in the current market, also known as BBO (Best Bid & Offer).