I'm still seeking for a Chinese karaoke/video-CD system that was produced around 1990. It is an Amiga clone with 020 CPU, 2+7Mb (odd memory, don't you think?), CD & floppy unit with the same shape of the CDTV.
Will post pictures if I finally put my hands on one.
You must be talking about the WonderTV unit! Maybe a tour around Asia could help???