To manage the orders,

1. Go to the Magento 2 Admin panel.
2. On the left navigation bar, click on the Tmall Integration.
   The menu appears as shown below:
   
3. Click on Manage Orders.
   The Manage Orders page appears as shown below:
   
4. Click on the Fetch Tmall Orders button to fetch new orders.
5. To View the Order details click on View.
   You can view the order details as shown below:
   
6. To view the Shipment details of the order, click on the Shipment icon.
   The Shipment details will be displayed as shown below:
   
7. To delete the order click on the Delete icon.
   
   The selected order will be deleted.

To delete orders in bulk,

1. On the Tmall Orders Grid, click on the Actions list.
   
2. Click on Delete Order(s).
   The selected orders will be deleted.