WW2 Chinese Nationalist troops are an unusual choice of figure for a maker to choose, although not so strange when you consider that these Hing Fat figures are marked on the base “Made in China”.
Presumably they are designed to oppose the Hing Fat WW2 Japanese range, backed up by the WW2 Australians?
Chinese WWII uniforms and equipment were very varied, they used any available German, US, French and British material. I found a few clues and images online on Wikipedia and other sources.
All that remains to do is a gloss spray varnish as suits their simple paint scheme.
Previous Hing Fat 54mm figure samples from Peter Evans (who sells on eBay at Figsculpt) include WW2 French, WW2 Italians and WW2 Russians which you can see painted here at:
The set has possible conversion potential – those in the British helmets could be some form of Indian troops?
I was surprised to see an illustration from the mid 19th century 1860s of Japanese troops with similar headgear. This Pinterest sourced image appears to be from an Osprey Men at Arms 530 book – looks interesting – https://ospreypublishing.com/store/military-history/series-books/men-at-arms/japanese-armies-1868-1877
Blog posted by Mark Man of TIN, 3/4 May 2021