Shanzhai is indeed difficult to play now, you can take a look at BTE mining. The mining machine I bought last week has already paid for itself, and now I'm just earning money passively every day. Later on, I can also mine Bitcoin.

K33 launches a directed issuance of 85 million Swedish Krona in stocks, planning to increase holdings by up to 1,000 Bitcoins
The Blockchain Group increases holdings by 182 Bitcoins, bringing total holdings to 1,653 Bitcoins
Japanese fashion brand ANAP increases holdings by approximately 31.2 Bitcoins, bringing total holdings to approximately 184.6 Bitcoins

BTC has a steady inflow daily, and this stable inflow generally does not create selling pressure. Even if someone sells, it will gradually rise back up.

Altcoins are indeed not performing well; it's better to avoid altcoins. If $SUI also cannot stabilize and starts to trend downwards, it's best to consider gradually giving up. Even Ethereum can underperform, and Sui can too.