Yeah, my theory is that some other company, maybe Xing Xing Technology, got hold of one of Vast Fame's engines and hacked it together, it's definitely low quality for a VF game..
There are actually like four or five of these games, based on House of Flying Daggers, but only two of them are dumped, and the rom names are both based on loose translations of their subtitles for some reason - "Dragonslayer Chapter Surrounded" and "Sky Dragon".