The question is, how does he know about the reverse high-leverage contract platform elsewhere?? It can't be resolved at all, right?

According to BlockBeats news, on June 6, Mirror Tang (@mirrorzk), founder of Web3 security company Salus, posted on social media that since March of this year, Chinese law enforcement has uncovered three cases of money laundering using HyperLiquid, where the method involved utilizing Hyperliquid's high-leverage liquidation mechanism to hedge and clean illegal gains, creating liquidation losses on HyperLiquid while profiting from reverse positions on centralized trading platforms, completing the money laundering process. Salus will publish a research article in collaboration with law enforcement agencies to formally disclose this information in the future.