What is the secret network in Binance smart chain?

Could you please elaborate on the concept of the "secret network" within the Binance Smart Chain? I'm curious to understand its purpose, functionality, and how it differs from other components of the BSC ecosystem. Is it a specialized layer for privacy-preserving transactions, or does it serve a different role entirely? Additionally, how does it integrate with the broader BSC infrastructure, and what are the benefits for users and developers alike?