The slowdown in the growth of so-called mining difficulty shows that miners have had to pause upgrading equipment after the epidemic prompted Chinese authorities to impose a quarantine and major mining equipment makers delayed production and shipments. Miners now keep running the remaining old machines since a high bitcoin price at the moment keeps such operations profitable, while waiting for new models to be delivered. The outbreak already slowed logistics, and the fact that many mining farms are located in isolated, remote areas makes it even harder to deliver the machines to these sites.