Bitcoin is currently trading below the key acceptance area near $88,000 and is entering a structural stress test phase. Macro structural analysis shows that since 2020, BTC/USD has been following a stable pattern of supply and demand blocks. The recent move from around $125,000 to about $81,000 represents a rapid fluctuation in five block units. If the price can continue to dip six blocks, the target will point to the area around $74,000, which is an important structural reference point. If the price remains above $100,000, it may indicate a price rotation; whereas if it falls below $74,000, it could further dip to $55,000 or even $46,000.