M. P. Shiel (1899) The Yellow Danger, London, Grant Richards
Not all invasion threats were purported to come from the Germans, the French or from Anarchists: in M.P. Shiel’s Yellow Danger it is an army of Chinese who invade Europe.
A contemporary review gives a good overview of the plot and style.
Full text available at: https://archive.org/details/yellowdanger00shierich
The afterword from a 1998 edition of the book can be found at: http://www.alangullette.com/lit/shiel/essays/YellowDangerRevisited.htm
An additional reviews can be found at: http://mysteryfile.com/blog/?p=1841