It's one of a series of four (at least), but only two of them are dumped: 十面埋伏-风云篇, 十面埋伏-天龙篇, 十面埋伏-屠龙篇, 十面埋伏-英雄篇.
As far as I know the developer is called "Tian Cai Xiao Zi" (天才小子), the name is hidden in the ROM and I have a copy of one of the other games in the series that actually displays the logo on-screen. Though that could be the name of a publisher or something else, for all I know - some other RPGs from the same developers were released by Sintax under their own name, like
this one.
The RPG engine they use is actually based on one originally developed by Vast Fame, I'm not sure how they got hold of it, but they weren't very good at using it... and csmGameEngine is actually the name of a homebrew GB game engine, so I guess they based part of it on that too. Also all the music is stolen from Telefang.
also, welcome to the forum!