diff --git a/export_presets.cfg b/export_presets.cfg
new file mode 100644
index 0000000..f996db2
--- /dev/null
+++ b/export_presets.cfg
@@ -0,0 +1,75 @@
+[runnable_presets]
+
+"Windows Desktop"="Windows Desktop"
+
+[preset.0]
+
+name="Windows Desktop"
+platform="Windows Desktop"
+dedicated_server=false
+custom_features=""
+export_filter="scenes"
+export_files=PackedStringArray()
+include_filter=""
+exclude_filter=""
+export_path="../aaa.exe"
+patches=PackedStringArray()
+patch_delta_encoding=false
+patch_delta_compression_level_zstd=19
+patch_delta_min_reduction=0.1
+patch_delta_include_filters="*"
+patch_delta_exclude_filters=""
+encryption_include_filters=""
+encryption_exclude_filters=""
+seed=0
+encrypt_pck=false
+encrypt_directory=false
+script_export_mode=2
+
+[preset.0.options]
+
+custom_template/debug=""
+custom_template/release=""
+debug/export_console_wrapper=1
+binary_format/embed_pck=true
+texture_format/s3tc_bptc=true
+texture_format/etc2_astc=false
+shader_baker/enabled=true
+binary_format/architecture="x86_64"
+codesign/enable=false
+codesign/timestamp=true
+codesign/timestamp_server_url=""
+codesign/digest_algorithm=1
+codesign/description=""
+codesign/custom_options=PackedStringArray()
+application/modify_resources=true
+application/icon=""
+application/console_wrapper_icon=""
+application/icon_interpolation=4
+application/file_version=""
+application/product_version=""
+application/company_name=""
+application/product_name=""
+application/file_description=""
+application/copyright=""
+application/trademarks=""
+application/export_angle=0
+application/export_d3d12=0
+application/d3d12_agility_sdk_multiarch=true
+ssh_remote_deploy/enabled=false
+ssh_remote_deploy/host="user@host_ip"
+ssh_remote_deploy/port="22"
+ssh_remote_deploy/extra_args_ssh=""
+ssh_remote_deploy/extra_args_scp=""
+ssh_remote_deploy/run_script="Expand-Archive -LiteralPath '{temp_dir}\\{archive_name}' -DestinationPath '{temp_dir}'
+$action = New-ScheduledTaskAction -Execute '{temp_dir}\\{exe_name}' -Argument '{cmd_args}'
+$trigger = New-ScheduledTaskTrigger -Once -At 00:00
+$settings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries
+$task = New-ScheduledTask -Action $action -Trigger $trigger -Settings $settings
+Register-ScheduledTask godot_remote_debug -InputObject $task -Force:$true
+Start-ScheduledTask -TaskName godot_remote_debug
+while (Get-ScheduledTask -TaskName godot_remote_debug | ? State -eq running) { Start-Sleep -Milliseconds 100 }
+Unregister-ScheduledTask -TaskName godot_remote_debug -Confirm:$false -ErrorAction:SilentlyContinue"
+ssh_remote_deploy/cleanup_script="Stop-ScheduledTask -TaskName godot_remote_debug -ErrorAction:SilentlyContinue
+Unregister-ScheduledTask -TaskName godot_remote_debug -Confirm:$false -ErrorAction:SilentlyContinue
+Remove-Item -Recurse -Force '{temp_dir}'"
diff --git a/project.godot b/project.godot
index e197dd8..10b9fb3 100644
--- a/project.godot
+++ b/project.godot
@@ -13,7 +13,11 @@ config_version=5
 config/name="模拟宗门"
 run/main_scene="uid://d1odycoaqhhyg"
 config/features=PackedStringArray("4.7", "Forward Plus")
-config/icon="res://icon.svg"
+
+[autoload]
+
+GameState="*res://src/Core/GameState.gd"
+TimeSystem="*res://src/Core/TimeSystem.gd"
 
 [display]
 
diff --git a/src/Core/TimeSystem.gd b/src/Core/TimeSystem.gd
new file mode 100644
index 0000000..1d7d0ff
--- /dev/null
+++ b/src/Core/TimeSystem.gd
@@ -0,0 +1,18 @@
+extends Node
+
+signal day_passed(year, month, day)
+
+const DAY_LENGTH := 5.0
+var speed := 1.0
+var _elapsed := 0.0
+
+func _process(delta: float) -> void:
+	_elapsed += delta * speed
+	if _elapsed >= DAY_LENGTH:
+		_elapsed -= DAY_LENGTH
+		_advance()
+
+func _advance() -> void:
+	# GameState.year, GameState.month, GameState.day 推进
+	GameState.day = GameState.day + 1;
+	day_passed.emit()
diff --git a/src/Core/TimeSystem.gd.uid b/src/Core/TimeSystem.gd.uid
new file mode 100644
index 0000000..223e696
--- /dev/null
+++ b/src/Core/TimeSystem.gd.uid
@@ -0,0 +1 @@
+uid://c13ljuiktgrgw
diff --git a/src/UI/Panels/SavePanel.tscn b/src/UI/Panels/SavePanel.tscn
index 5da79ed..67eca83 100644
--- a/src/UI/Panels/SavePanel.tscn
+++ b/src/UI/Panels/SavePanel.tscn
@@ -36,11 +36,26 @@ layout_mode = 2
 size_flags_vertical = 3
 size_flags_stretch_ratio = 9.0
 
-[node name="SlotList" type="VBoxContainer" parent="VBoxContainer/ScrollContainer" unique_id=674823582]
+[node name="HBoxContainer" type="HBoxContainer" parent="VBoxContainer/ScrollContainer" unique_id=596966633]
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+
+[node name="VBoxContainer" type="VBoxContainer" parent="VBoxContainer/ScrollContainer/HBoxContainer" unique_id=844163531]
 layout_mode = 2
 size_flags_horizontal = 3
 
-[node name="SaveSlot" parent="VBoxContainer/ScrollContainer/SlotList" unique_id=214547620 instance=ExtResource("2_uloko")]
+[node name="SaveGroup" type="Button" parent="VBoxContainer/ScrollContainer/HBoxContainer/VBoxContainer" unique_id=150349711]
 layout_mode = 2
+text = "存档1"
+
+[node name="SlotList" type="VBoxContainer" parent="VBoxContainer/ScrollContainer/HBoxContainer" unique_id=674823582]
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_stretch_ratio = 5.0
+
+[node name="SaveSlot" parent="VBoxContainer/ScrollContainer/HBoxContainer/SlotList" unique_id=214547620 instance=ExtResource("2_uloko")]
+layout_mode = 2
+size_flags_vertical = 1
 
 [connection signal="button_up" from="VBoxContainer/Header/Button_Esc" to="." method="_on_button_esc_button_up"]