diff --git a/InterReact.Tests/SystemTests/Orders/CompletedOrdersTest.cs b/InterReact.Tests/SystemTests/Orders/CompletedOrdersTest.cs
index c3b6179..8ef1b6c 100644
--- a/InterReact.Tests/SystemTests/Orders/CompletedOrdersTest.cs
+++ b/InterReact.Tests/SystemTests/Orders/CompletedOrdersTest.cs
@@ -7,18 +7,18 @@ public class Completed : CollectionTestBase
     public Completed(ITestOutputHelper output, TestFixture fixture) : base(output, fixture) { }
 
 
-    //[Fact]
-    //public async Task CompletedOrdersAsyncTest()
-    //{
-    //    bool api = true;
+    [Fact]
+    public async Task CompletedOrdersAsyncTest()
+    {
+        bool api = true;
 
-    //    IList<CompletedOrder> orders = await Client
-    //        .Service
-    //        .GetCompleteOrdersAsync(api);
+        IList<CompletedOrder> orders = await Client
+            .Service
+            .GetCompleteOrdersAsync(api);
 
-    //    Write($"Complete orders found: {orders.Count}.");
+        Write($"Complete orders found: {orders.Count}.");
 
-    //    foreach (CompletedOrder order in orders)
-    //        Write(order.Stringify());
-    //}
+        foreach (CompletedOrder order in orders)
+            Write(order.Stringify());
+    }
 }
diff --git a/InterReact.Tests/SystemTests/Orders/OpenOrderTests.cs b/InterReact.Tests/SystemTests/Orders/OpenOrderTests.cs
index b604ea9..ed6d09e 100644
--- a/InterReact.Tests/SystemTests/Orders/OpenOrderTests.cs
+++ b/InterReact.Tests/SystemTests/Orders/OpenOrderTests.cs
@@ -6,20 +6,48 @@ public class Open : CollectionTestBase
 {
     public Open(ITestOutputHelper output, TestFixture fixture) : base(output, fixture) { }
 
-    //[Fact(Skip = "Test may conflict when run together with order placement tests")]
-    //public async Task OpenOrdersAsyncTest()
-    //{
-    //    await Task.Delay(3000);
+    [Fact]
+    public async Task OpenOrdersAsyncTest()
+    {
+        await Task.Delay(1000);
 
-    //    IList<object> list = await Client
-    //        .Service
-    //        .GetOpenOrdersAsync(OpenOrdersRequestType.OpenOrders)
-    //        .WaitAsync(TimeSpan.FromSeconds(10));
+        // 1 place order
+        // Place the order with orderId: orderId
+        var contract = new Contract()
+        {
+            SecurityType = ContractSecurityType.Stock,
+            Symbol = "AMZN",
+            Currency = "USD",
+            Exchange = "SMART"
+        };
 
-    //    Write($"Open orders found: {list.Count}.");
+        int orderId = Client.Request.GetNextId();
 
-    //    foreach (object item in list)
-    //        Write(item.Stringify());
-    //}
+        var order = new Order()
+        {
+            Action = OrderAction.Buy,
+            TotalQuantity = 1,
+            OrderType = OrderTypes.Limit,
+            LimitPrice = 1,
+            TimeInForce = OrderTimeInForce.GoodUntilCancelled
+        };
+
+        OrderMonitor orderMonitor = await Client.Service.PlaceOrderAsync(order, contract);
+
+        //2 Request Open Order
+        IList<OpenOrder> openOrders = await Client
+            .Service
+            .RequestOpenOrdersAsync()
+            .WaitAsync(TimeSpan.FromSeconds(1));
+
+        Write($"Open orders found: {openOrders.Count}.");
+
+        foreach (Object item in openOrders)
+            Write(item.Stringify());
+
+        //3 cancel Order
+        orderMonitor.CancelOrder();
+        orderMonitor.Dispose();
+    }
 }
 
diff --git a/InterReact.Tests/SystemTests/Orders/OrderIntegrationTests.cs b/InterReact.Tests/SystemTests/Orders/OrderIntegrationTests.cs
new file mode 100644
index 0000000..fcd2ec8
--- /dev/null
+++ b/InterReact.Tests/SystemTests/Orders/OrderIntegrationTests.cs
@@ -0,0 +1,87 @@
+using InterReact;
+using Stringification;
+using System.Reactive.Linq;
+using System.Reactive.Threading.Tasks;
+
+namespace Orders
+{
+    public class OrderIntegrationTests: CollectionTestBase
+    {
+
+        public OrderIntegrationTests(ITestOutputHelper output, TestFixture fixture) : base(output, fixture) { }
+
+
+        [Fact]
+        public async Task Place_GetOpen_Cancel_Order_Test()
+        {
+            // Place the order with orderId: orderId
+            var contract = new Contract()
+            {
+                SecurityType = ContractSecurityType.Stock,
+                Symbol = "AMZN",
+                Currency = "USD",
+                Exchange = "SMART"
+            };
+
+            int orderId = Client.Request.GetNextId();
+
+            var order = new Order()
+            {
+                Action = OrderAction.Buy,
+                TotalQuantity = 1,
+                OrderType = OrderTypes.Limit,
+                LimitPrice = 1,
+                TimeInForce = OrderTimeInForce.GoodUntilCancelled
+            };
+
+            OrderMonitor orderMonitor = await Client.Service.PlaceOrderAsync(order, contract);
+
+            orderMonitor.CancelOrder();
+
+            OrderStatusReport report = await orderMonitor
+                .Messages
+                .OfType<OrderStatusReport>()
+                .Take(TimeSpan.FromSeconds(3))
+                .FirstOrDefaultAsync();
+
+            //orderMonitor.Dispose();
+            Assert.True(report.Status == OrderStatus.Cancelled || report.Status == OrderStatus.ApiCancelled);
+
+
+            // 等待1秒
+            await Task.Delay(1000);
+
+
+            // Get the order, if contains orderId, succeed
+            Task<IList<Object>> task2 = Client
+                .Response
+                .Take(TimeSpan.FromSeconds(3))
+                .ToList<Object>()
+                .ToTask();
+
+            Client.Request.RequestOpenOrders();
+            var openOrder = await task2;
+            Assert.IsType<Order>(openOrder);
+
+            // 等待1秒
+            await Task.Delay(1000);
+
+
+            // cancel the order
+            Task<Execution?> task3 = Client
+            .Response
+            .WithOrderId(orderId)
+            .OfType<Execution>()
+            .Take(TimeSpan.FromSeconds(3))
+            .FirstOrDefaultAsync()
+            .ToTask();
+            Client.Request.CancelOrder(orderId);
+            Execution? execution3 = await task3;
+            Assert.NotNull(execution3);
+
+            await Task.Run(() => Console.WriteLine("3"));
+        }
+
+       
+    }
+}
diff --git a/InterReact.Tests/SystemTests/Orders/OrderMonitorTest.cs b/InterReact.Tests/SystemTests/Orders/OrderMonitorTest.cs
index e21a07e..75a3239 100644
--- a/InterReact.Tests/SystemTests/Orders/OrderMonitorTest.cs
+++ b/InterReact.Tests/SystemTests/Orders/OrderMonitorTest.cs
@@ -28,7 +28,7 @@ public async Task OrderMonitorTest()
             OrderType = OrderTypes.Market
         };
 
-        OrderMonitor orderMonitor = Client.Service.PlaceOrder(order, contract);
+        OrderMonitor orderMonitor = await Client.Service.PlaceOrderAsync(order, contract);
 
         orderMonitor
             .Messages
@@ -66,7 +66,7 @@ public async Task OrderMonitorCancellationTest()
             OrderType = OrderTypes.Market
         };
 
-        OrderMonitor orderMonitor = Client.Service.PlaceOrder(order, contract);
+        OrderMonitor orderMonitor = await Client.Service.PlaceOrderAsync(order, contract);
 
         orderMonitor.CancelOrder();
 
@@ -109,7 +109,7 @@ public async Task OrderMonitorModificationTest()
         };
 
         // Place the order
-        OrderMonitor orderMonitor = Client.Service.PlaceOrder(order, contract);
+        OrderMonitor orderMonitor = await Client.Service.PlaceOrderAsync(order, contract);
 
         //await Task.Delay(100);
 
diff --git a/InterReact/InterReact.csproj b/InterReact/InterReact.csproj
index 954b2ee..c51ab18 100644
--- a/InterReact/InterReact.csproj
+++ b/InterReact/InterReact.csproj
@@ -18,6 +18,7 @@
 	<EnablePackageValidation>true</EnablePackageValidation>
 	<AnalysisMode>All</AnalysisMode>
 	<NoWarn>CA1848;</NoWarn>
+	<Title>InterReact.IBKR</Title>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/InterReact/Services/OrderMonitor.cs b/InterReact/Services/OrderMonitor.cs
index 279b216..5b7c632 100644
--- a/InterReact/Services/OrderMonitor.cs
+++ b/InterReact/Services/OrderMonitor.cs
@@ -1,4 +1,6 @@
 using System.Reactive.Subjects;
+using System.Reactive.Linq;
+using System.Reactive.Threading.Tasks;
 
 namespace InterReact;
 
@@ -7,8 +9,41 @@ public partial class Service
     /// <summary>
     /// Places an order and returns an OrderMonitor object (below) which can be used to monitor the order.
     /// </summary>
-    public OrderMonitor PlaceOrder(Order order, Contract contract) =>
-        new(order, contract, Request, Response);
+    public async Task<OrderMonitor> PlaceOrderAsync(Order order, Contract contract)
+    {
+        return await Task.Run(() =>
+        {
+            return new OrderMonitor(order, contract, Request, Response);
+        });
+    }
+
+    public async Task<IList<OpenOrder>> RequestOpenOrdersAsync()
+    {
+        Task<IList<OpenOrder>> task =
+            Response
+            .OfType<OpenOrder>()
+            .Take(TimeSpan.FromMilliseconds(500))
+            .ToList()
+            .ToTask();
+        Request.RequestOpenOrders();
+        var orders = await task;
+        return orders;
+    }
+
+    public async Task<IList<CompletedOrder>> GetCompleteOrdersAsync(bool api)
+    {
+        Task<IList<CompletedOrder>> task = 
+            Response
+            .OfType<CompletedOrder>()
+            .Take(TimeSpan.FromMilliseconds(500))
+            .ToList()
+            .ToTask();
+
+        Request.RequestCompletedOrders(api);
+
+        var completedOrders = await task;
+        return completedOrders;
+    }
 }
 
 /// <summary>