Both sides being out on patrol, I can’t imagine why they wouldn’t at least have a sidearm.
They have agreed to not carry arms in that region to avoid major bloodshed, I believe. However, this fight was so intense, quite a few people got thrown off of the cliffs. China will probably seek advice from New York, ,Seattle, Ferguson or California authorities on how to handle those "Democrat" Indians.
With the agreement of both sides, there is a sort of DMZ along the border line, with no weapons allowed. So they have regular fights with sticks and stones.