Nothing much to say, I just increased my position by 100 WU.

Isn't the position already full? Where's the money to add more? There's a method called: spot leverage, and there are similar options in contracts known as coin-margin contracts, Binance is very user-friendly.

Both of these allow you to use your current spot ETH (or BTC) as collateral to transfer to leverage or coin-margin contracts, and then buy more ETH. Every time ETH drops by 100, I add 1 million U.

Please do not exceed 2x leverage, safety first.