diff --git a/Zframework/init.lua b/Zframework/init.lua
index 5f1bfd86..264ba4a2 100644
--- a/Zframework/init.lua
+++ b/Zframework/init.lua
@@ -37,7 +37,6 @@ REQUIRE=    require'Zframework.require'
 TASK=       require'Zframework.task'
 WS=         require'Zframework.websocket'
 LANG=       require'Zframework.languages'
-THEME=      require'Zframework.theme'
 
 --Love-based modules (basic)
 FILE=       require'Zframework.file'
diff --git a/main.lua b/main.lua
index 317b44cd..fed59801 100644
--- a/main.lua
+++ b/main.lua
@@ -99,6 +99,7 @@ for _,v in next,fs.getDirectoryItems('parts/shaders')do
     end
 end
 
+THEME=      require'parts.theme'
 LINE=       require'parts.line'
 DATA=       require'parts.data'
 
diff --git a/parts/scenes/app_console.lua b/parts/scenes/app_console.lua
index dc4cc691..38f5cd6d 100644
--- a/parts/scenes/app_console.lua
+++ b/parts/scenes/app_console.lua
@@ -510,7 +510,7 @@ local commands={}do
         details={
             "Load a theme.",
             "",
-            "Usage: theme <classic|xmas|sprfes|zday1/2/3/4/5|fool|birth>",
+            "Usage: theme <classic|xmas|sprfes|zday1/2/3|season1/2/3/4|fool|birth>",
         },
     }
     commands.test={
diff --git a/Zframework/theme.lua b/parts/theme.lua
similarity index 75%
rename from Zframework/theme.lua
rename to parts/theme.lua
index bf762803..63614486 100644
--- a/Zframework/theme.lua
+++ b/parts/theme.lua
@@ -39,21 +39,22 @@ function THEME.calculate(Y,M,D)
 
         --Z day
         D=='26'and(
-            (M=='01'or M=='02'or M=='03')and'zday1'or
-            (M=='04'or M=='05')and'zday2'or
-            (M=='06'or M=='07')and'zday3'or
-            (M=='08'or M=='09')and'zday4'or
-            (M=='10'or M=='11'or M=='12')and'zday5'
+            (M=='03'or M=='04'or M=='05'or M=='06')and'zday1'or
+            (M=='07'or M=='08'or M=='09'or M=='10')and'zday2'or
+            (M=='11'or M=='12'or M=='01'or M=='02')and'zday3'
         )or
 
-        'classic'
+        --Normal
+        (
+            (M=='02'or M=='03'or M=='04')and'season1'or
+            (M=='05'or M=='06'or M=='07')and'season2'or
+            (M=='08'or M=='09'or M=='10')and'season3'or
+            (M=='11'or M=='12'or M=='01')and'season4'
+        )
 end
 
 function THEME.set(theme)
-    if theme=='classic'then
-        BG.setDefault('space')
-        BGM.setDefault('nil')
-    elseif theme=='xmas'then
+    if theme=='xmas'then
         BG.setDefault('snow')
         BGM.setDefault('xmas')
         MES.new('info',"==Merry Christmas==")
@@ -66,19 +67,25 @@ function THEME.set(theme)
         MES.new('info',"★☆新年快乐☆★")
     elseif theme=='zday1'then
         BG.setDefault('lanterns')
-        BGM.setDefault('null')
+        BGM.setDefault('overzero')
     elseif theme=='zday2'then
         BG.setDefault('lanterns')
-        BGM.setDefault('overzero')
+        BGM.setDefault('jazz nihilism')
     elseif theme=='zday3'then
-        BG.setDefault('lanterns')
-        BGM.setDefault('vacuum')
-    elseif theme=='zday4'then
-        BG.setDefault('lanterns')
-        BGM.setDefault('jazz nihilism')
-    elseif theme=='zday5'then
         BG.setDefault('lanterns')
         BGM.setDefault('empty')
+    elseif theme=='season1'then
+        BG.setDefault('space')
+        BGM.setDefault('null')
+    elseif theme=='season2'then
+        BG.setDefault('space')
+        BGM.setDefault('nil')
+    elseif theme=='season3'then
+        BG.setDefault('space')
+        BGM.setDefault('vacuum')
+    elseif theme=='season4'then
+        BG.setDefault('space')
+        BGM.setDefault('space')
     elseif theme=='fool'then
         BG.setDefault('blockrain')
         BGM.setDefault('how feeling')