Brief Summary: Bitcoin fell 10% to $102,000 on Binance on Friday, with ETH, SOL, and XRP plunging 15-30%, following Trump's announcement of 100% tariffs on Chinese imports, triggering $20 billion in long position liquidations. The global market lost $16 billion in leveraged longs.

Impact Analysis: This event revives fears of a trade war affecting the hardware supply chain for mining (such as rare earth chips from China), putting pressure on short-term prices. However, historically, such dips in October (a bullish month for BTC) are short-lived, with rebounds of 20% in the following weeks, driven by institutional flows.

Practical recommendations (less than $100): Buy $50 in BTC spot on Binance or Coinbase (currently ~$121,000, wait for stabilization). Use the rest for ETH staking on platforms like Lido (APY ~4-5%), earning passively without selling. Monitor the Fear & Greed Index; if it rises from "extreme fear", accumulate gradually.