I have not written about the web disk for a long time, because there is no exciting change in the web disk industry recently. Just recently, more and more places are using DropBox external chain, the previously purchased drop.io is getting slower and slower, BRSBOX recently launched expensive VIP service, SkyDrive began large-scale popularity, and the nanodisk is more and more useful and less and less, because RayFile is faster and more powerful.