On July 19th at 22:40, here are the current operational suggestions for Bitcoin, Ethereum, and Dogecoin:

I personally have a short position on Dogecoin at 0.254, which has reached my first target of 0.2407. I will continue the setup with a second target at the previous low of 0.227.

$ETH resistance at 3570, support at 3477. Ethereum can continue to hold short positions around 3570, including at the current price, with the first target at 3480 to reduce the position by 30%-50%. If it breaks below 3477, we will add to the position, aiming for 3400.

Key risk control: If there is a rebound to 3550-3556, you can add a short position, but the position should not exceed 30% of the original.

Strictly set a stop loss at 3580, and initiate a trailing stop after profits exceed 2%. Monitor the signals for RSI (6) to see if it can return above 30 and watch for changes in the MACD bar to prevent false rebounds.

$DOGE ideal short position for a rebound is 0.247-0.248 (MA5 + Bollinger midline overlap area), you can reduce the position by 30%.

Short position stop loss: strictly set at 0.2520. If it breaks upwards, the trend will reverse.

A continuation signal for a decline: if the price cannot return above 0.242 within 30 minutes → hold remaining short positions targeting 0.227.

If the daily fluctuation exceeds 8%, reduce the position to within 10% to guard against spikes.

$BTC key positions for Bitcoin, strong support at the 24-hour low of 116,812.76. A breakout below will open up downward space.

Defend the resistance; Bollinger midline 118,209.64 + MA5 118,200. A breakout above will invalidate the bearish strength.

If it rebounds to 118,200, you can short; if it breaks below 116,812, follow the trend to expand the target with 115000 as the previous low psychological barrier.