docs: README.md.

README.md

@@ -1,12 +1,14 @@
 ## legacy-lands-library
 
+This is a project that aims to encapsulate various existing libraries to facilitate the team to develop Folia plug-ins.
+
+The overall dependence is on the Fairy Framework framework. It probably doesn't have a lot of overly complex stuff, like an unnecessary repackaging of some large library.
+
 ### modules
 
 - annotation        - Not fully completed (annotation processor available)
 - configuration     - Not fully completed (serialization/yaml/json/toml available)
 - mongodb           - Not fully completed
-- cache             - Not fully completed (L1 cache available)
+- cache             - Not fully completed (Memory Caffeine cache available)
 - data              - Not started yet
-- security          - Not started yet
-
-and more...
+- security          - Not started yet