As for whether he is really at the address you mentioned above, I'm not sure. Many registered companies have this address, because the Hong Kong Company Law stipulates that registered Hong Kong companies must provide a real and valid Hong Kong address, and Hong Kong companies can allow offshore operations. Since 2000, there have been millions of registered companies operating offshore in Hong Kong, and many registered addresses are reused!
The place of registration and place of business of offshore companies in Hong Kong are allowed to be separated. If you register in Hong Kong and operate outside Hong Kong, you can enjoy the tax and foreign exchange benefits brought by offshore operation. So many trading companies and self-employed individuals in Chinese mainland register a company in Hong Kong, and the registered address provided by their agents is the same address, that is, the address of the local accountant in Hong Kong!