It is possible for people in China to purchase BSV. The most cost-effective method involves the following steps: first, download a VPN; next, search online for a free Apple App Store account registered in the Japan region to download the exchange app; then, purchase USDT via the C2C (peer-to-peer) platforms on Binance or OKX, transfer it to the Bitget exchange, and finally withdraw it to your own ElectrumSV wallet.
In China, purchasing and holding virtual currency is not illegal, though selling it is. Similarly, while using or purchasing a VPN is not illegal, selling VPN services is against the law.