I found a good way to arbitrage.
The risk is also low, and there is no big problem in terms of days.
That is BNB. The price of BNB is relatively strong. Sometimes the waterfall of ETH and BTC is very large.
You can open a USDC contract robot, open the grid to the maximum, put more margin, and the liquidation price is below 500 for the best. You can keep running, set the stop loss, and check it once every half a day. A money printing machine is born.