diff --git a/Altob.NtuInvoiceGateway/Altob.NtuInvoiceGateway.csproj b/Altob.NtuInvoiceGateway/Altob.NtuInvoiceGateway.csproj
index 5a25aeb..66267b6 100644
--- a/Altob.NtuInvoiceGateway/Altob.NtuInvoiceGateway.csproj
+++ b/Altob.NtuInvoiceGateway/Altob.NtuInvoiceGateway.csproj
@@ -1,9 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
-    <PropertyGroup>
-        <TargetFramework>net9.0</TargetFramework>
-        <Nullable>enable</Nullable>
-        <ImplicitUsings>enable</ImplicitUsings>
-    </PropertyGroup>
+  <PropertyGroup>
+      <TargetFramework>net9.0</TargetFramework>
+      <Nullable>enable</Nullable>
+      <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Serilog.AspNetCore" Version="8.0.1" />
+    <PackageReference Include="Serilog.Sinks.Seq" Version="6.0.0" />
+  </ItemGroup>
 
 </Project>
diff --git a/Altob.NtuInvoiceGateway/Pages/Invoice.cshtml.cs b/Altob.NtuInvoiceGateway/Pages/Invoice.cshtml.cs
index 83dcf2a..c761ccf 100644
--- a/Altob.NtuInvoiceGateway/Pages/Invoice.cshtml.cs
+++ b/Altob.NtuInvoiceGateway/Pages/Invoice.cshtml.cs
@@ -33,6 +33,7 @@ public class InvoiceModel : PageModel
     public InvoiceRequest InvoiceData { get; set; } = new();
 
     public string? ErrorMessage { get; set; }
+    [TempData]
     public string? SuccessMessage { get; set; }
     public string CompanyName => _companyInfo.Name;
     public string CompanyTaxId => _companyInfo.TaxId;
@@ -43,6 +44,7 @@ public class InvoiceModel : PageModel
 
     public void OnGet()
     {
+        RestoreDisplayValuesFromTempData();
         // GET 方法保留為空，主要接收方式改為 POST JSON
     }
 
@@ -196,8 +198,11 @@ public class InvoiceModel : PageModel
             if (apiResponse?.msgCode == "0000")
             {
                 SuccessMessage = "發票資訊提交成功！";
+                TempData[nameof(DisplayTransDateTime)] = DisplayTransDateTime;
+                TempData[nameof(DisplayTransAmount)] = DisplayTransAmount;
                 _logger.LogInformation("{ServiceName} - {ActionName} submitted successfully for OrderID: {OrderID}",
                     ServiceName, actionName, InvoiceData.OrderID);
+                return RedirectToPage();
             }
             else
             {
@@ -236,4 +241,19 @@ public class InvoiceModel : PageModel
         InvoiceData.LoveCode = InvoiceData.LoveCode ?? string.Empty;
         InvoiceData.TaxType = InvoiceData.TaxType ?? string.Empty;
     }
+
+    private void RestoreDisplayValuesFromTempData()
+    {
+        if (TempData.TryGetValue(nameof(DisplayTransDateTime), out var transDateObj) &&
+            transDateObj is string transDate)
+        {
+            DisplayTransDateTime = transDate;
+        }
+
+        if (TempData.TryGetValue(nameof(DisplayTransAmount), out var amountObj) &&
+            amountObj is string amount)
+        {
+            DisplayTransAmount = amount;
+        }
+    }
 }
diff --git a/Altob.NtuInvoiceGateway/Program.cs b/Altob.NtuInvoiceGateway/Program.cs
index efa201d..9a24c4c 100644
--- a/Altob.NtuInvoiceGateway/Program.cs
+++ b/Altob.NtuInvoiceGateway/Program.cs
@@ -1,5 +1,15 @@
+using Serilog;
+
 var builder = WebApplication.CreateBuilder(args);
 
+builder.Host.UseSerilog((context, services, configuration) =>
+{
+    configuration
+        .ReadFrom.Configuration(context.Configuration)
+        .Enrich.FromLogContext()
+        .Enrich.WithProperty("ServiceName", "NtuInvoiceGateway");
+});
+
 // Add services to the container.
 builder.Services.AddRazorPages();
 builder.Services.AddHttpClient();
@@ -12,22 +22,29 @@ builder.Services.Configure<Altob.NtuInvoiceGateway.Models.InvoiceApiOptions>(
 
 var app = builder.Build();
 
-// Configure the HTTP request pipeline.
-if (!app.Environment.IsDevelopment())
+try
 {
-    app.UseExceptionHandler("/Error");
-    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
-    app.UseHsts();
-}
+    // Configure the HTTP request pipeline.
+    if (!app.Environment.IsDevelopment())
+    {
+        app.UseExceptionHandler("/Error");
+        // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
+        app.UseHsts();
+    }
 
-app.UseHttpsRedirection();
+    app.UseHttpsRedirection();
 
-app.UseRouting();
+    app.UseRouting();
 
-app.UseAuthorization();
+    app.UseAuthorization();
 
-app.MapStaticAssets();
-app.MapRazorPages()
-    .WithStaticAssets();
+    app.MapStaticAssets();
+    app.MapRazorPages()
+        .WithStaticAssets();
 
-app.Run();
+    app.Run();
+}
+finally
+{
+    Log.CloseAndFlush();
+}
diff --git a/Altob.NtuInvoiceGateway/appsettings.json b/Altob.NtuInvoiceGateway/appsettings.json
index 532d850..730ffa3 100644
--- a/Altob.NtuInvoiceGateway/appsettings.json
+++ b/Altob.NtuInvoiceGateway/appsettings.json
@@ -5,6 +5,26 @@
       "Microsoft.AspNetCore": "Information"
     }
   },
+  "Serilog": {
+    "Using": [ "Serilog.Sinks.Seq" ],
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "System": "Warning"
+      }
+    },
+    "WriteTo": [
+      {
+        "Name": "Seq",
+        "Args": {
+          "serverUrl": "http://localhost:5341",
+          "apiKey": ""
+        }
+      }
+    ],
+    "Enrich": [ "FromLogContext" ]
+  },
   "AllowedHosts": "*",
   "CompanyInfo": {
     "Name": "國立台灣大學臨時停車場",
diff --git a/Altob.NtuInvoiceGateway/wwwroot/favicon.ico b/Altob.NtuInvoiceGateway/wwwroot/favicon.ico
index 63e859b..ef9890f 100644
Binary files a/Altob.NtuInvoiceGateway/wwwroot/favicon.ico and b/Altob.NtuInvoiceGateway/wwwroot/favicon.ico differ