Ming Dynasty Chinese arquebusier equipment

[Conrad von Hotzendorf]

I saw this interesting article showing illustrations of the equipment that a Ming Dynasty soldier would use with a matchlock arquebus:
https://greatmingmilitary.blogspot.com/2015/12/equipment-of-ming-soldier-arquebusier.html

Here's some of the things I thought were interesting:

The first illustration is from a Ming Dynasty military treatise called the Ji Xiao Xin Shu. After googling that, I saw that it was written around 1560.
I added the red numbers to show which image I think belongs to each description. The "bullet bag" confused me because it looks more like a helmet than a bag.
I thought the bamboo tube belt was the most interesting part because it seems like an independent reinvention of the bandolier.

I was curious about the horizontal line going through the spout of this powder flask. Maybe it's a sliding powder cutoff?

I was glad to see a powder measure because many sources overlook them when talking about powder flasks.
I guess my main conclusion is that bamboo is useful for making tubes.