Lately, I've been tinkering with new wallet features, and I casually looked into the "block builder/bundle" system. To put it simply, retail investors only need a rough understanding: your transaction may not go directly into a block; it might be bundled together with others in the middle, aiming for smoother processing and to reduce the chance of front-running or sandwich attacks. But there could also be an additional, invisible "relay station" layer you can't see. My current minimum requirement is: knowing whether my transaction is going through the public mempool or being privately bundled; for large or sensitive operations, try to use protected routing; if I see the execution result looks off, I take a screenshot (used to it...) so I can review the cause later. As for how the bidding and profit-sharing work at a deeper level, I feel it's similar to those "re-anchoring" reposts in stablecoin groups—seeing too many just makes me anxious. Just set the switches you can choose correctly first.