diff --git a/docs/design/AppIcon-source.svg b/docs/design/AppIcon-source.svg
new file mode 100644
index 0000000..deb0b1e
--- /dev/null
+++ b/docs/design/AppIcon-source.svg
@@ -0,0 +1,41 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1024" height="1024" viewBox="0 0 1024 1024">
+  <defs>
+    <filter id="wordShadow" x="-20%" y="-20%" width="140%" height="140%">
+      <feDropShadow dx="0" dy="8" stdDeviation="8" flood-color="#0f3f33" flood-opacity="0.42"/>
+    </filter>
+  </defs>
+
+  <rect width="1024" height="1024" fill="#8ED9E4"/>
+  <circle cx="748" cy="286" r="124" fill="#FFF1A8"/>
+  <circle cx="748" cy="286" r="76" fill="#FFFFFF"/>
+
+  <path d="M0 426C210 350 404 377 592 500C731 592 875 608 1024 506V1024H0V426Z" fill="#2C7E79"/>
+  <path d="M0 612C226 533 436 536 624 631C774 710 903 690 1024 580V1024H0V612Z" fill="#1F6761"/>
+  <path d="M0 780C232 678 436 641 634 693C799 743 924 711 1024 594V1024H0V780Z" fill="#53A247"/>
+  <path d="M0 888C232 807 447 780 656 825C812 863 931 825 1024 722V1024H0V888Z" fill="#82CC52"/>
+  <path d="M318 1024C506 861 725 727 1024 604V1024H318Z" fill="#B2D95E"/>
+
+  <path
+    d="M188 560H268L324 416L428 704L500 560H594"
+    fill="none"
+    stroke="#F4FFFC"
+    stroke-width="36"
+    stroke-linecap="round"
+    stroke-linejoin="round"
+    opacity="0.96"/>
+
+  <text
+    x="512"
+    y="846"
+    fill="#FFFFFF"
+    stroke="#145D46"
+    stroke-width="5"
+    stroke-opacity="0.68"
+    paint-order="stroke fill"
+    font-family="Hiragino Sans GB, Songti SC, Helvetica Neue, Arial, sans-serif"
+    font-size="136"
+    font-weight="600"
+    text-anchor="middle"
+    letter-spacing="8"
+    filter="url(#wordShadow)">康康</text>
+</svg>
diff --git a/康康.xcodeproj/xcshareddata/xcschemes/康康.xcscheme b/康康.xcodeproj/xcshareddata/xcschemes/康康.xcscheme
index ff4c04b..162559b 100644
--- a/康康.xcodeproj/xcshareddata/xcschemes/康康.xcscheme
+++ b/康康.xcodeproj/xcshareddata/xcschemes/康康.xcscheme
@@ -18,7 +18,7 @@
                BlueprintIdentifier = "5E463CF82FC403BB0089145B"
                BuildableName = "&#x5eb7;&#x5eb7;.app"
                BlueprintName = "&#x5eb7;&#x5eb7;"
-               ReferencedContainer = "container:康康.xcodeproj">
+               ReferencedContainer = "container:&#x5eb7;&#x5eb7;.xcodeproj">
             </BuildableReference>
          </BuildActionEntry>
       </BuildActionEntries>
@@ -38,7 +38,7 @@
                BlueprintIdentifier = "5E463D072FC403BC0089145B"
                BuildableName = "&#x5eb7;&#x5eb7;Tests.xctest"
                BlueprintName = "&#x5eb7;&#x5eb7;Tests"
-               ReferencedContainer = "container:康康.xcodeproj">
+               ReferencedContainer = "container:&#x5eb7;&#x5eb7;.xcodeproj">
             </BuildableReference>
          </TestableReference>
          <TestableReference
@@ -49,7 +49,7 @@
                BlueprintIdentifier = "5E463D112FC403BC0089145B"
                BuildableName = "&#x5eb7;&#x5eb7;UITests.xctest"
                BlueprintName = "&#x5eb7;&#x5eb7;UITests"
-               ReferencedContainer = "container:康康.xcodeproj">
+               ReferencedContainer = "container:&#x5eb7;&#x5eb7;.xcodeproj">
             </BuildableReference>
          </TestableReference>
       </Testables>
@@ -71,7 +71,7 @@
             BlueprintIdentifier = "5E463CF82FC403BB0089145B"
             BuildableName = "&#x5eb7;&#x5eb7;.app"
             BlueprintName = "&#x5eb7;&#x5eb7;"
-            ReferencedContainer = "container:康康.xcodeproj">
+            ReferencedContainer = "container:&#x5eb7;&#x5eb7;.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
    </LaunchAction>
@@ -88,7 +88,7 @@
             BlueprintIdentifier = "5E463CF82FC403BB0089145B"
             BuildableName = "&#x5eb7;&#x5eb7;.app"
             BlueprintName = "&#x5eb7;&#x5eb7;"
-            ReferencedContainer = "container:康康.xcodeproj">
+            ReferencedContainer = "container:&#x5eb7;&#x5eb7;.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
    </ProfileAction>
diff --git a/康康/Assets.xcassets/AppIcon.appiconset/Contents.json b/康康/Assets.xcassets/AppIcon.appiconset/Contents.json
index ffdfe15..7612143 100644
--- a/康康/Assets.xcassets/AppIcon.appiconset/Contents.json
+++ b/康康/Assets.xcassets/AppIcon.appiconset/Contents.json
@@ -1,85 +1,98 @@
 {
-  "images" : [
+  "images": [
     {
-      "idiom" : "universal",
-      "platform" : "ios",
-      "size" : "1024x1024"
+      "filename": "app-icon-kangkang-1024.png",
+      "idiom": "universal",
+      "platform": "ios",
+      "size": "1024x1024"
     },
     {
-      "appearances" : [
+      "appearances": [
         {
-          "appearance" : "luminosity",
-          "value" : "dark"
+          "appearance": "luminosity",
+          "value": "dark"
         }
       ],
-      "idiom" : "universal",
-      "platform" : "ios",
-      "size" : "1024x1024"
+      "filename": "app-icon-kangkang-dark-1024.png",
+      "idiom": "universal",
+      "platform": "ios",
+      "size": "1024x1024"
     },
     {
-      "appearances" : [
+      "appearances": [
         {
-          "appearance" : "luminosity",
-          "value" : "tinted"
+          "appearance": "luminosity",
+          "value": "tinted"
         }
       ],
-      "idiom" : "universal",
-      "platform" : "ios",
-      "size" : "1024x1024"
+      "filename": "app-icon-kangkang-tinted-1024.png",
+      "idiom": "universal",
+      "platform": "ios",
+      "size": "1024x1024"
     },
     {
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "16x16"
+      "filename": "app-icon-kangkang-16.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "16x16"
     },
     {
-      "idiom" : "mac",
-      "scale" : "2x",
-      "size" : "16x16"
+      "filename": "app-icon-kangkang-32.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "16x16"
     },
     {
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "32x32"
+      "filename": "app-icon-kangkang-32.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "32x32"
     },
     {
-      "idiom" : "mac",
-      "scale" : "2x",
-      "size" : "32x32"
+      "filename": "app-icon-kangkang-64.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "32x32"
     },
     {
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "128x128"
+      "filename": "app-icon-kangkang-128.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "128x128"
     },
     {
-      "idiom" : "mac",
-      "scale" : "2x",
-      "size" : "128x128"
+      "filename": "app-icon-kangkang-256.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "128x128"
     },
     {
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "256x256"
+      "filename": "app-icon-kangkang-256.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "256x256"
     },
     {
-      "idiom" : "mac",
-      "scale" : "2x",
-      "size" : "256x256"
+      "filename": "app-icon-kangkang-512.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "256x256"
     },
     {
-      "idiom" : "mac",
-      "scale" : "1x",
-      "size" : "512x512"
+      "filename": "app-icon-kangkang-512.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "512x512"
     },
     {
-      "idiom" : "mac",
-      "scale" : "2x",
-      "size" : "512x512"
+      "filename": "app-icon-kangkang-1024.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "512x512"
     }
   ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
+  "info": {
+    "author": "xcode",
+    "version": 1
   }
 }
diff --git a/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-1024.png b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-1024.png
new file mode 100644
index 0000000..204381b
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diff --git a/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-128.png b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-128.png
new file mode 100644
index 0000000..71eb47a
Binary files /dev/null and b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-128.png differ
diff --git a/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-16.png b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-16.png
new file mode 100644
index 0000000..f0117a1
Binary files /dev/null and b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-16.png differ
diff --git a/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-256.png b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-256.png
new file mode 100644
index 0000000..735739e
Binary files /dev/null and b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-256.png differ
diff --git a/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-32.png b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-32.png
new file mode 100644
index 0000000..4fe3f43
Binary files /dev/null and b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-32.png differ
diff --git a/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-512.png b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-512.png
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index 0000000..7427677
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diff --git a/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-64.png b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-64.png
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diff --git a/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-dark-1024.png b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-dark-1024.png
new file mode 100644
index 0000000..204381b
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diff --git a/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-tinted-1024.png b/康康/Assets.xcassets/AppIcon.appiconset/app-icon-kangkang-tinted-1024.png
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index 0000000..204381b
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