What is the use of the special store of the Knights of the Windsman? The special store of the Knights of the Storm is introduced

What is the special store in "The Knights of the Wind"? What do you sell in special stores in The Knights? Many players don't know much about this. The following system is a series of related tips and tricks for you to share with you. I want to help you.
According to the author's knowledge, special stores will be promoted on November 11th of the annual game time. In other words, in the first ten days of November, there are special items that seem to have only martial arts cheats. Others are not clear. In addition, things in the store cannot be bought all. Leave something (the reason is not clear)