diff --git a/README.md b/README.md
index 11612718..3ecf7382 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,25 @@
 # Easy2D
 
-Easy2D 为 C++ 初学者提供 Windows 桌面游戏的开发框架，简单易学，容易上手。你只需要为游戏场景中的每一个元素设置它们的属性，Easy2D 就可以自动处理它们，让一切变得井然有序。
+## Introduction
+Easy2D is a open-source 2D C++ game engine, only support win32 platform.
+Easy2D-Core is a game irrelevant lib that provide a lot useful tools can be used in other projects. I made a lot wheels to make cpp simpler to use.
+Easy2D is still under heavy developing. I write it and use it to developy my own tiny games.
+More docs and examples will be added later.
 
-中文官网：[www.easy2d.cn](http://www.easy2d.cn)
\ No newline at end of file
+## Features
+* Scene management
+* Transitions between scenes
+* Actions behaviours
+* Buttons and menus
+* Texture atlas support
+* Audio support
+* Custom data storage
+* Direct2D based
+
+## Next plan
+* Physical engine
+* Particle system
+
+## Contact
+* Website: www.easy2d.cn
+* QQ Group: 608406540
diff --git a/core/Node/ENode.cpp b/core/Node/ENode.cpp
index 15e83c30..01890067 100644
--- a/core/Node/ENode.cpp
+++ b/core/Node/ENode.cpp
@@ -97,8 +97,8 @@ void e2d::ENode::_update()
 	{
 		this->_sortChildren();
 
-		UINT size = m_vChildren.size();
-		UINT i;
+		size_t size = m_vChildren.size();
+		size_t i;
 		for (i = 0; i < size; i++)
 		{
 			auto child = m_vChildren[i];
@@ -597,7 +597,7 @@ std::vector<e2d::ENode*>& e2d::ENode::getChildren()
 	return m_vChildren;
 }
 
-UINT e2d::ENode::getChildrenCount() const
+size_t e2d::ENode::getChildrenCount() const
 {
 	return m_vChildren.size();
 }
@@ -636,8 +636,8 @@ bool e2d::ENode::removeChild(ENode * child)
 
 	if (child)
 	{
-		UINT size = m_vChildren.size();
-		for (UINT i = 0; i < size; i++)
+		size_t size = m_vChildren.size();
+		for (size_t i = 0; i < size; i++)
 		{
 			if (m_vChildren[i] == child)
 			{
@@ -668,8 +668,8 @@ void e2d::ENode::removeChild(const EString & childName)
 	// �������� Hash ֵ
 	unsigned int hash = childName.hash();
 
-	UINT size = m_vChildren.size();
-	for (UINT i = 0; i < size; i++)
+	size_t size = m_vChildren.size();
+	for (size_t i = 0; i < size; i++)
 	{
 		auto child = m_vChildren[i];
 		if (child->m_nHashName == hash && child->m_sName == childName)
diff --git a/project/vs2017/Easy2D.sln b/project/vs2017/Easy2D.sln
index 41abced5..c4734e48 100644
--- a/project/vs2017/Easy2D.sln
+++ b/project/vs2017/Easy2D.sln
@@ -1,26 +1,19 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26730.12
+VisualStudioVersion = 15.0.27004.2009
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Easy2D", "Easy2D.vcxproj", "{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|x64 = Debug|x64
 		Debug|x86 = Debug|x86
-		Release|x64 = Release|x64
 		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Debug|x64.ActiveCfg = Debug|x64
-		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Debug|x64.Build.0 = Debug|x64
-		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Debug|x64.Deploy.0 = Debug|x64
 		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Debug|x86.ActiveCfg = Debug|Win32
 		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Debug|x86.Build.0 = Debug|Win32
 		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Debug|x86.Deploy.0 = Debug|Win32
-		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Release|x64.ActiveCfg = Release|x64
-		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Release|x64.Build.0 = Release|x64
 		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Release|x86.ActiveCfg = Release|Win32
 		{FF7F943D-A89C-4E6C-97CF-84F7D8FF8EDF}.Release|x86.Build.0 = Release|Win32
 	EndGlobalSection
diff --git a/project/vs2017/Easy2D.vcxproj b/project/vs2017/Easy2D.vcxproj
index fc4ec006..06645478 100644
--- a/project/vs2017/Easy2D.vcxproj
+++ b/project/vs2017/Easy2D.vcxproj
@@ -49,6 +49,7 @@
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>false</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">