Today, during testing, I discovered an even better method for "lossless interaction": hedging US stock pre-market (limit orders) and perpetual contracts on a spot trading platform. I tried a few trades, and the hedging was very easy. There's absolutely no need to follow the tutorial and wait until the US stock market opens at 22:30 to trade; that's too tiring. The reason is that in the @StableStock pre-market, there are fewer limit buy orders than buy orders, making it very easy to fill them. Task accomplished for today, going to sleep now