Vue Pa Chay's revolt
The gunpowder was also of a Hmong type ( salt peter , charcoal , and guano was used similar to western black powder , but shavings from a type of tree were added to increase the explositivity ) . 
<triplet> gunpowder <subj> salt peter <obj> has part <subj> charcoal <obj> has part <triplet> black powder <subj> salt peter <obj> has part <subj> charcoal <obj> has part