Jigwa was only a sketch. It was never developed in detail. When I get
home from work tonight I will see if I can find the article about it.
> I am glad to recieve reply from the author!
Am I the author? I wonder. My brain worked differently in those days.
When I found the articles and read them today, I was surprised by some
of the material.
> Well, sketch it might be,
> but it has its own place as a project with an original idea, and
> everybody speaks about it if you ask them about conlangs with Chinese.
The articles that were published in JPL are here...
http://www.sonayagema.org/temporary/jigwa.pdf
I do not have any more information.