If you're interested in making a vocal demonstration, you can use the .aisp or .ais down below. Each sample should be 5-6 seconds long.

Download the .aisp and .ais! → Google Drive

Unfortunately, I don't have a Chinese phone number, so I can't make an AISingers account. I saw somewhere else that you could email them and ask for help making an account if that was the case, but they haven't responded to me yet. Is there any other way I could make an account (like by using some sort of phone number proxy or something)? If not, are there any UTAU ports or something of the voicebanks?