Crypto ETFs debuted on the HKEX with the listing of the CSOP Bitcoin Futures ETF (3066) and CSOP Ether Futures ETF (3068). These were joined by the Samsung Bitcoin Futures Active ETF (3135) in January.
It is trading with ETFs, Futures ETFs.
You won't have bitcoin if you use your money to invest into ETFs. It is for people who don't want to reduce risk by directly buying bitcoins and hold bitcoins. ETFs will expose more people with Bitcoin and cryptocurrency market but if they are wise, they will directly buy bitcoin and cryptocurrencies.
Not your keys, not your coins. You don't have any key, any coin, any token with ETFs.