diff --git a/GanjooRazor/Areas/Admin/Pages/Poets.cshtml b/GanjooRazor/Areas/Admin/Pages/Poets.cshtml
index 38a7d6b9..8f424f60 100644
--- a/GanjooRazor/Areas/Admin/Pages/Poets.cshtml
+++ b/GanjooRazor/Areas/Admin/Pages/Poets.cshtml
@@ -69,6 +69,11 @@
                 <input type="text" name="@($"pinorder-{poet.Id}")" id="@($"pinorder-{poet.Id}")" value="@poet.PinOrder" />
             </td>
         </tr>
+        <tr>
+            <td colspan="4">
+                @Html.Raw(poet.Description)
+            </td>
+        </tr>
     }
     <tr>
         <td colspan="4">
diff --git a/RMuseum/Migrations/20211021145514_GanjoorHalfCenturies.Designer.cs b/RMuseum/Migrations/20211021153153_GanjoorHalfCenturies.Designer.cs
similarity index 99%
rename from RMuseum/Migrations/20211021145514_GanjoorHalfCenturies.Designer.cs
rename to RMuseum/Migrations/20211021153153_GanjoorHalfCenturies.Designer.cs
index aecb0b3f..da866449 100644
--- a/RMuseum/Migrations/20211021145514_GanjoorHalfCenturies.Designer.cs
+++ b/RMuseum/Migrations/20211021153153_GanjoorHalfCenturies.Designer.cs
@@ -10,7 +10,7 @@ using RMuseum.DbContext;
 namespace RMuseum.Migrations
 {
     [DbContext(typeof(RMuseumDbContext))]
-    [Migration("20211021145514_GanjoorHalfCenturies")]
+    [Migration("20211021153153_GanjoorHalfCenturies")]
     partial class GanjoorHalfCenturies
     {
         protected override void BuildTargetModel(ModelBuilder modelBuilder)
@@ -839,7 +839,7 @@ namespace RMuseum.Migrations
                     b.Property<int?>("GanjoorHalfCenturyId")
                         .HasColumnType("int");
 
-                    b.Property<int>("PoetId")
+                    b.Property<int?>("PoetId")
                         .HasColumnType("int");
 
                     b.Property<int>("PoetOrder")
@@ -2735,9 +2735,7 @@ namespace RMuseum.Migrations
 
                     b.HasOne("RMuseum.Models.Ganjoor.GanjoorPoet", "Poet")
                         .WithMany()
-                        .HasForeignKey("PoetId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
+                        .HasForeignKey("PoetId");
 
                     b.Navigation("Poet");
                 });
diff --git a/RMuseum/Migrations/20211021145514_GanjoorHalfCenturies.cs b/RMuseum/Migrations/20211021153153_GanjoorHalfCenturies.cs
similarity index 98%
rename from RMuseum/Migrations/20211021145514_GanjoorHalfCenturies.cs
rename to RMuseum/Migrations/20211021153153_GanjoorHalfCenturies.cs
index d01f6086..3b8151fe 100644
--- a/RMuseum/Migrations/20211021145514_GanjoorHalfCenturies.cs
+++ b/RMuseum/Migrations/20211021153153_GanjoorHalfCenturies.cs
@@ -51,7 +51,7 @@ namespace RMuseum.Migrations
                     Id = table.Column<int>(type: "int", nullable: false)
                         .Annotation("SqlServer:Identity", "1, 1"),
                     PoetOrder = table.Column<int>(type: "int", nullable: false),
-                    PoetId = table.Column<int>(type: "int", nullable: false),
+                    PoetId = table.Column<int>(type: "int", nullable: true),
                     GanjoorHalfCenturyId = table.Column<int>(type: "int", nullable: true)
                 },
                 constraints: table =>
@@ -68,7 +68,7 @@ namespace RMuseum.Migrations
                         column: x => x.PoetId,
                         principalTable: "GanjoorPoets",
                         principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.Restrict);
                 });
 
             migrationBuilder.CreateIndex(
diff --git a/RMuseum/Migrations/RMuseumDbContextModelSnapshot.cs b/RMuseum/Migrations/RMuseumDbContextModelSnapshot.cs
index f5449790..3e43cddd 100644
--- a/RMuseum/Migrations/RMuseumDbContextModelSnapshot.cs
+++ b/RMuseum/Migrations/RMuseumDbContextModelSnapshot.cs
@@ -837,7 +837,7 @@ namespace RMuseum.Migrations
                     b.Property<int?>("GanjoorHalfCenturyId")
                         .HasColumnType("int");
 
-                    b.Property<int>("PoetId")
+                    b.Property<int?>("PoetId")
                         .HasColumnType("int");
 
                     b.Property<int>("PoetOrder")
@@ -2733,9 +2733,7 @@ namespace RMuseum.Migrations
 
                     b.HasOne("RMuseum.Models.Ganjoor.GanjoorPoet", "Poet")
                         .WithMany()
-                        .HasForeignKey("PoetId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
+                        .HasForeignKey("PoetId");
 
                     b.Navigation("Poet");
                 });
diff --git a/RMuseum/Models/Ganjoor/GanjoorPeriodPoet.cs b/RMuseum/Models/Ganjoor/GanjoorPeriodPoet.cs
index d9bfb1e1..9b169f65 100644
--- a/RMuseum/Models/Ganjoor/GanjoorPeriodPoet.cs
+++ b/RMuseum/Models/Ganjoor/GanjoorPeriodPoet.cs
@@ -18,11 +18,11 @@
         /// <summary>
         /// poet id
         /// </summary>
-        public int PoetId { get; set; }
+        public int? PoetId { get; set; }
 
         /// <summary>
         /// poet
         /// </summary>
-        public GanjoorPoet Poet { get; set; }
+        public virtual GanjoorPoet Poet { get; set; }
     }
 }
diff --git a/RMuseum/Services/Implementation/GanjoorService-Partials/GanjoorService-Centuries.cs b/RMuseum/Services/Implementation/GanjoorService-Partials/GanjoorService-Centuries.cs
index ffccb8f1..758a3dc4 100644
--- a/RMuseum/Services/Implementation/GanjoorService-Partials/GanjoorService-Centuries.cs
+++ b/RMuseum/Services/Implementation/GanjoorService-Partials/GanjoorService-Centuries.cs
@@ -22,9 +22,11 @@ namespace RMuseum.Services.Implementation
         {
             try
             {
-                var oldOnes = await _context.GanjoorHalfCenturies.Include(o => o.Poets)).ToArrayAsync();
+                await _context.Database.ExecuteSqlRawAsync("DELETE FROM GanjoorPeriodPoet");
+                var oldOnes = await _context.GanjoorHalfCenturies.ToArrayAsync();
                 _context.RemoveRange(oldOnes);
                 await _context.SaveChangesAsync();
+                
 
                 var periods = new List<GanjoorHalfCentury>
                 {