The TRON ecosystem has been very lively recently, with Decentralized Finance protocols and on-chain game projects popping up one after another. But have you ever thought about a question: smart contracts are actually quite "reclusive"; they only recognize that bit of data on-chain, and the outside world is just a black box to them.

This is awkward. If you want to create a stablecoin, you need real-time coin prices, right? If you want to build a cross-chain bridge, you have to confirm the transaction status on the other chain, right? In blockchain games, drawing cards and opening treasure chests must involve a true random number, right? All of these require feeding off-chain information to the smart contracts.

So oracles become very critical. They are like an external antenna for smart contracts, capable of reliably transferring real-world prices, events, and even weather data on-chain. Without this layer of bridging, no matter how advanced a Dapp is, it can only play with itself.