diff --git a/README.md b/README.md
index ad9330f..d49999f 100644
--- a/README.md
+++ b/README.md
@@ -35,32 +35,32 @@ import towhee
 torch.manual_seed(42)
 
 batch_size = 8
-experts = {"audio": torch.rand(batch_size, 29, 128),
-           "face": torch.rand(batch_size, 512),
-           "i3d.i3d.0": torch.rand(batch_size, 1024),
-           "imagenet.resnext101_32x48d.0": torch.rand(batch_size, 2048),
-           "imagenet.senet154.0": torch.rand(batch_size, 2048),
-           "ocr": torch.rand(batch_size, 49, 300),
-           "r2p1d.r2p1d-ig65m.0": torch.rand(batch_size, 512),
-           "scene.densenet161.0": torch.rand(batch_size, 2208),
-           "speech": torch.rand(batch_size, 32, 300)
+device = 'cuda' if torch.cuda.is_available() else 'cpu'
+experts = {"audio": torch.rand(batch_size, 29, 128).to(device),
+           "face": torch.rand(batch_size, 512).to(device),
+           "i3d.i3d.0": torch.rand(batch_size, 1024).to(device),
+           "imagenet.resnext101_32x48d.0": torch.rand(batch_size, 2048).to(device),
+           "imagenet.senet154.0": torch.rand(batch_size, 2048).to(device),
+           "ocr": torch.rand(batch_size, 49, 300).to(device),
+           "r2p1d.r2p1d-ig65m.0": torch.rand(batch_size, 512).to(device),
+           "scene.densenet161.0": torch.rand(batch_size, 2208).to(device),
+           "speech": torch.rand(batch_size, 32, 300).to(device)
            }
 ind = {
-    "r2p1d.r2p1d-ig65m.0": torch.ones(batch_size,),
-    "imagenet.senet154.0": torch.ones(batch_size,),
-    "imagenet.resnext101_32x48d.0": torch.ones(batch_size,),
-    "scene.densenet161.0": torch.ones(batch_size,),
-    "audio": torch.ones(batch_size,),
-    "speech": torch.ones(batch_size,),
-    "ocr": torch.randint(low=0, high=2, size=(batch_size,)),
-    "face": torch.randint(low=0, high=2, size=(batch_size,)),
-    "i3d.i3d.0": torch.ones(batch_size,),
+    "r2p1d.r2p1d-ig65m.0": torch.ones(batch_size,).to(device),
+    "imagenet.senet154.0": torch.ones(batch_size,).to(device),
+    "imagenet.resnext101_32x48d.0": torch.ones(batch_size,).to(device),
+    "scene.densenet161.0": torch.ones(batch_size,).to(device),
+    "audio": torch.ones(batch_size,).to(device),
+    "speech": torch.ones(batch_size,).to(device),
+    "ocr": torch.randint(low=0, high=2, size=(batch_size,)).to(device),
+    "face": torch.randint(low=0, high=2, size=(batch_size,)).to(device),
+    "i3d.i3d.0": torch.ones(batch_size,).to(device),
 }
-
-text = torch.randn(batch_size, 1, 37, 768)
+text = torch.randn(batch_size, 1, 37, 768).to(device)
 
 towhee.dc([Entity(experts=experts, ind=ind, text=text)]) \
-    .video_text_embedding.collaborative_experts[('experts', 'ind', 'text'), ('text_embds', 'vid_embds')]().show()
+    .video_text_embedding.collaborative_experts[('experts', 'ind', 'text'), ('text_embds', 'vid_embds')](device=device).show()
 ```
 
 ![](img.png)