Have you ever encountered this situation—users placing orders, and the contract gets stuck at the price fetching stage, watching the slippage grow larger and larger? Even when the network isn't congested and Gas fees are sufficient, where's the problem? To put it simply, it's because the method of calling price data is outdated.

Recently, I’ve noticed that some DeFi projects operate with surprisingly smooth trading experiences, completely unlike the typical on-chain interaction. What’s their secret? It’s not switching to a different blockchain, but fundamentally changing the logic of "reading prices."

What is the traditional approach? Request data from external sources repeatedly, call multiple times, and wait for responses. What’s the new idea? Let smart contracts communicate directly with real-time price sources, without detours. Behind this is a data push plus on-chain direct read architecture promoted by projects like APRO.

How is this specifically implemented?

Imagine this: thousands of independent nodes worldwide act like satellites, monitoring market price fluctuations in real-time and performing aggregation verification. The final confirmed price data is instantly locked into a fixed address on the chain. Your contract doesn’t need to "call external services" at all; it just reads the latest data from that address as easily as checking an account balance.

What are the benefits of doing this?

**The essence of speed**—bypassing the intermediate request process. Price reading shifts from "cross-network calls" to "direct on-chain queries," significantly reducing latency.

**The reason for stability**: Prices are provided by numerous decentralized nodes, so a failure of a single data source is no longer catastrophic.

**The savings effect**: Simplified call logic, fewer steps for contract execution, and naturally lower Gas consumption.

Essentially, it upgrades data fetching from "waiting for delivery" to "getting it from the fridge yourself." While others’ contracts are still eagerly awaiting data, you’ve already read it out.