what is virtual currency mining, Overview

See the following monthly chart:For example, before 3731, 2021 and December 25, 2020,Before 5178, 2015 and December 25, 2014,

But it doesn't resonate with the sensitive cycle of the variable disk!Before 3587 in 2018, December 25, 2017,But it doesn't resonate with the sensitive cycle of the variable disk!

Before 5178, 2015 and December 25, 2014,See the following monthly chart: