diff --git a/Source/GrasscutterTools/Forms/FormDropEditor.cs b/Source/GrasscutterTools/Forms/FormDropEditor.cs
index 07b8512..e0d376b 100644
--- a/Source/GrasscutterTools/Forms/FormDropEditor.cs
+++ b/Source/GrasscutterTools/Forms/FormDropEditor.cs
@@ -1,4 +1,22 @@
-using System;
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -11,8 +29,6 @@ using GrasscutterTools.Utils;
 
 using Newtonsoft.Json;
 
-using static System.Windows.Forms.VisualStyles.VisualStyleElement.StartPanel;
-
 namespace GrasscutterTools.Forms
 {
     public partial class FormDropEditor : Form
diff --git a/Source/GrasscutterTools/Game/Drop/DropData.cs b/Source/GrasscutterTools/Game/Drop/DropData.cs
index 658d317..fbb141b 100644
--- a/Source/GrasscutterTools/Game/Drop/DropData.cs
+++ b/Source/GrasscutterTools/Game/Drop/DropData.cs
@@ -1,4 +1,22 @@
-using Newtonsoft.Json;
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+using Newtonsoft.Json;
 
 namespace GrasscutterTools.Game.Drop
 {
diff --git a/Source/GrasscutterTools/Game/Drop/DropInfo.cs b/Source/GrasscutterTools/Game/Drop/DropInfo.cs
index 0b6421a..65eabef 100644
--- a/Source/GrasscutterTools/Game/Drop/DropInfo.cs
+++ b/Source/GrasscutterTools/Game/Drop/DropInfo.cs
@@ -1,4 +1,22 @@
-using System.Collections.Generic;
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+using System.Collections.Generic;
 
 using Newtonsoft.Json;
 
diff --git a/Source/GrasscutterTools/Game/ItemMapGroup.cs b/Source/GrasscutterTools/Game/ItemMapGroup.cs
index cd806f4..dd02cd2 100644
--- a/Source/GrasscutterTools/Game/ItemMapGroup.cs
+++ b/Source/GrasscutterTools/Game/ItemMapGroup.cs
@@ -1,4 +1,22 @@
-using System.Collections.Generic;
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+using System.Collections.Generic;
 using System.Linq;
 
 namespace GrasscutterTools.Game
diff --git a/Source/GrasscutterTools/Game/Mail/Mail.cs b/Source/GrasscutterTools/Game/Mail/Mail.cs
index ed1708d..f44847a 100644
--- a/Source/GrasscutterTools/Game/Mail/Mail.cs
+++ b/Source/GrasscutterTools/Game/Mail/Mail.cs
@@ -1,4 +1,22 @@
-using System;
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+using System;
 using System.Collections.Generic;
 
 using Newtonsoft.Json;
diff --git a/Source/GrasscutterTools/Game/Mail/MailItem.cs b/Source/GrasscutterTools/Game/Mail/MailItem.cs
index f6127ef..220f4d8 100644
--- a/Source/GrasscutterTools/Game/Mail/MailItem.cs
+++ b/Source/GrasscutterTools/Game/Mail/MailItem.cs
@@ -1,4 +1,22 @@
-namespace GrasscutterTools.Game.Mail
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+namespace GrasscutterTools.Game.Mail
 {
     /// <summary>
     /// 附件
diff --git a/Source/GrasscutterTools/Game/Player/PlayerData.cs b/Source/GrasscutterTools/Game/Player/PlayerData.cs
index 80e8a4b..413e2a8 100644
--- a/Source/GrasscutterTools/Game/Player/PlayerData.cs
+++ b/Source/GrasscutterTools/Game/Player/PlayerData.cs
@@ -1,4 +1,22 @@
-namespace GrasscutterTools.Game.Player
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+namespace GrasscutterTools.Game.Player
 {
     /// <summary>
     /// 玩家数据
diff --git a/Source/GrasscutterTools/Game/Shop/ItemParamData.cs b/Source/GrasscutterTools/Game/Shop/ItemParamData.cs
index 54c3337..c0d8f58 100644
--- a/Source/GrasscutterTools/Game/Shop/ItemParamData.cs
+++ b/Source/GrasscutterTools/Game/Shop/ItemParamData.cs
@@ -1,4 +1,22 @@
-using Newtonsoft.Json;
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+using Newtonsoft.Json;
 
 namespace GrasscutterTools.Game.Shop
 {
diff --git a/Source/GrasscutterTools/Game/Shop/ShopInfo.cs b/Source/GrasscutterTools/Game/Shop/ShopInfo.cs
index e4c236f..f4bf26b 100644
--- a/Source/GrasscutterTools/Game/Shop/ShopInfo.cs
+++ b/Source/GrasscutterTools/Game/Shop/ShopInfo.cs
@@ -1,4 +1,22 @@
-using System.Collections.Generic;
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+using System.Collections.Generic;
 
 using Newtonsoft.Json;
 
diff --git a/Source/GrasscutterTools/Game/Shop/ShopTable.cs b/Source/GrasscutterTools/Game/Shop/ShopTable.cs
index 3f7e583..3a5d983 100644
--- a/Source/GrasscutterTools/Game/Shop/ShopTable.cs
+++ b/Source/GrasscutterTools/Game/Shop/ShopTable.cs
@@ -1,4 +1,22 @@
-using System.Collections.Generic;
+/**
+ *  Grasscutter Tools
+ *  Copyright (C) 2022 jie65535
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * 
+ **/
+using System.Collections.Generic;
 
 using Newtonsoft.Json;