diff --git a/.gitmodules b/.gitmodules
index 53a5c31140..ee7157e4c3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "resources"]
 	path = resources
-	url = git@github.com:w3c/testharness.js.git
+	url = git://github.com/w3c/testharness.js.git
diff --git a/contributors/ttwf_shenzhen/README.txt b/contributors/ttwf_shenzhen/README.txt
new file mode 100644
index 0000000000..7b23012d48
--- /dev/null
+++ b/contributors/ttwf_shenzhen/README.txt
@@ -0,0 +1 @@
+Test submissions for TestTWF Shenzhen
diff --git a/contributors/ttwf_shenzhen/windtale/submited/Blending_in_a_group_with_opacity.html b/contributors/ttwf_shenzhen/windtale/submited/Blending_in_a_group_with_opacity.html
new file mode 100644
index 0000000000..9a36e33edc
--- /dev/null
+++ b/contributors/ttwf_shenzhen/windtale/submited/Blending_in_a_group_with_opacity.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>mix-blend-mode with isolated groups API Test: Blending in a group with opacity</title>
+    <link rel="author" title="windtale" href="mailto:windtale@163.com">
+    <link rel="help" href="http://www.w3.org/TR/compositing-1/">
+    <link rel="help" href="">
+    <meta name="flags" content="dom">
+    <meta name="assert" content="The transform should rotate 180 degrees">
+    <style type="text/css">
+        #greenSquare {
+			mix-blend-mode: darken;
+        }
+        #redSquare {
+			mix-blend-mode: lighten;
+        }
+        #svgMain {
+            top: 100px;
+            left: 100px;
+            width: 200px;
+            height: 200px;
+			background: blue;
+        }
+    </style>
+
+</head>
+<body>
+
+<svg id="svgMain">
+	<g opacity="0.59">
+		<rect id="redSquare" width="100" height="100" fill="red"></rect>
+	</g>
+</svg>
+
+</body>
+</html>
diff --git a/resources b/resources
new file mode 160000
index 0000000000..75ed691611
--- /dev/null
+++ b/resources
@@ -0,0 +1 @@
+Subproject commit 75ed69161198e93ad059b8aace77a44d32d243eb
