万 is not to be taken literally as 10,000 in this context but as a very big numbe...

		tasogare on Oct 2, 2021 \| parent \| context \| favorite \| on: Tanaka Hisashige, builder of the Myriad Year Clock... 万 is not to be taken literally as 10,000 in this context but as a very big number, so million year is a good translation.