Based on the analysis of the BTC/USDT chart and the cash flow data, I assess the likelihood of a deep decline as follows:

Negative signals:

Cash flow data:

Net cash flow is negative (-146 BTC)

Selling pressure from large orders is increasing

Selling volume has surged in the last 24 hours

Technical analysis:

Price has broken through important support levels

MACD gives a strong sell signal

RSI below 50, with room to decrease

MA20 crosses below MA50

Target price range that may be tested:

28800-284243

77076-540081

Short term:

Near support: $84,000-85,000

Strong support: $82,000-83,000

Probability:

70% chance to test $84,000-85,000

60% chance to decline further to $82,000-83,000

Recommendation:

Do not attempt to catch the bottom because:

Selling pressure remains strong

No clear reversal signal yet

Cash flow remains negative

Trading strategy:

Wait for the price to reach the $82,000-84,000 range to accumulate

Divide purchase orders at different price levels

Set tight stop loss

Monitor further volume and cash flow fluctuations