Gold Bullion Meaning

How would I use the word Bullion in this context – Please help!!?
I am trying to incorporate a word used in the question for my essay topic (that sounded confusing but w/e)
The question says “…analyze the effects of the flow of silver bullion in this period.”
AND i’m trying to use it in a setence saying that most of this silver ended up going to china.
I have looked up the word Bullion and it means: “Gold or silver considered with respect to quantity rather than value.”
So what would be a good way to phrase this setence, or should I just not use the word Bullion and move on?
Thanks!
The majority of silver bullion was ultimately shipped to China.
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