Apparently lead was an inevitable byproduct of silver refining, because the silver mines had galena ore (lead-silver ore). So it became common due to its cheapness and didn't corrode easily.
So what I want to know now is, did Ancient China also use lead in the same ways and to the same degree? Did they have lead water pipes? Lead vessels?
The time period I'm interested in is 500 BCE to 500 CE, which is roughly the time of the Western Roman Era (Republic + Empire).