diff --git a/xe-7.x b/xe-7.x
index 14dd6c8..e9eb71d 100644
--- a/xe-7.x
+++ b/xe-7.x
@@ -1,4 +1,4 @@
-//Xe-7.x CodeName:Trusty Flight
+//Xe-7.x CodeName:Trusty Flighter
 2021-01-07 7.0.1300 Api:41
 2021-02-07 7.0.1360 Api:42
 2021-03-07 7.0.1388 Api:43
@@ -19,9 +19,9 @@
 2022-04-08 7.4.1785 build:56
 2022-05-08 7.5.1815 build:57
 2022-06-08 7.6.1846 build:58
-2022-07-02 7.7.1870 build:59
-2022-08-01 7.8.1900 build:60
+2022-07-02 7.7.1870 build:59
+2022-08-01 7.8.1900 build:60
 2022-09-02 7.9.1932 build:61
-2022-10-01 7.10.1961 build:62
+2022-10-01 7.10.1961 build:62
 2022-11-01 7.11.1992 build:63
-2022-12-06 7.12.2027 build:64
+2022-12-06 7.12.2027 build:64
diff --git a/xe-before-5.x.md b/xe-before-5.x.md
new file mode 100644
index 0000000..5903462
--- /dev/null
+++ b/xe-before-5.x.md
@@ -0,0 +1,23 @@
+# Note about xe project before 5.x
+
+## Background
+
+The Xe Project is a succeesor of the Final Fantasy Project, which was a project launched in 2019.
+
+In August 2019, the Xe Project was launched.
+
+In August 2020, the 5.x version of Xe Project was launched, and the first version is 5.0.570, which is released in 3th August, 2020.
+
+## The Code names for Xe Project
+
+The 5.x version of Xe Project is called "The Secular Brid"
+
+The 6.x version of Xe Project is called "Lost in Tianyi"
+
+The 7.x version of Xe Project is called "Trusty Flighter"
+
+The 8.x version of Xe Project is called "MidTerm build"
+
+The 9.x version of Xe Project is called "Revolution Build"
+
+The 10.x version of Xe Project is called "FlyCat I"