Tuan is a set of free wargames rules for the Boxer Rebellion. The scale is 1 figure = 5 men. The author, Tod P. Zechiel, is also the proprietor of Panfish Flies, which manufactures and sells hand-made fishing flies. For those who have never tied a fishing fly (I have made lots of them), it is a fine and delicate art. Mr. Zechiel originally published the rules as part of his miniature wargaming company, Cellmate Miniatures, which produced Boxer Rebellion figures.