The user wants a "Did You Know?" post for Binance Square. Let me break down the requirements:

1. No markdown
2. Start with "Did you know?"
3. 100-140 words total
4. Expand the fact with 2-3 interesting context sentences
5. End with a surprised reaction emoji (written out as text, e.g. 'Mind blown!') and a question
6. Final line must be exactly: #Layer2 #StableCoin #CryptoFact #LearnCrypto

The fact to expand: "DeFi protocols hold billions in TVL with no banks or intermediaries"

I need to write 100-140 words total. Let me craft this carefully.

Starting with "Did you know?" then expanding with 2-3 context sentences, then ending with "Mind blown!" (or similar) and a question, then the hashtags line.

Let me draft:

"Did you know? DeFi protocols collectively manage over $50 billion in total value locked without a single bank, broker, or centralized intermediary. Smart contracts automate lending, trading, and yield generation 24/7 across borders, governed by code rather than committees. This permissionless financial layer has processed trillions in volume since 2020, all while users retain full custody of their assets. Mind blown! What traditional financial service will DeFi replace next? #