P3: Somewhat important There are some mismatched source text in file ifw_zh_CN.ts, which lead to no proper translations in zh_CN locale environment. and it's looks like the same kind of issue as bug: https://bugreports.qt.io/browse/QTIFW-1084
Possible fix:
diff --git a/src/sdk/translations/ifw_zh_CN.ts b/src/sdk/translations/ifw_zh_CN.ts
index a826448d..10c3ef04 100644
--- a/src/sdk/translations/ifw_zh_CN.ts
+++ b/src/sdk/translations/ifw_zh_CN.ts
@@ -1946,8 +1946,8 @@ Installing component %1</source>
<translation><E7><BB><B4><E6><8A><A4> %1</translation>
</message>
<message>
- <source>Question</source>
- <translation><E9><97><AE><E9><A2><98></translation>
+ <source>%1 Question</source>
+ <translation>%1 <E9><97><AE><E9><A2><98></translation>
</message>
<message>
<source>Settings</source>
@@ -2288,7 +2288,7 @@ Please copy the installer to a local drive</source>
<translation><E5><BC><80><E5><A7><8B><E8><8F><9C><E5><8D><95><E5><BF><AB><E6><8D><B7><E6><96><B9><E5><BC><8F></translation>
</message>
<message>
- <source>Select the Start Menu in which you would like to create the program's shortcuts. You can also enter a name to create a new folder.</source>
+ <source>Select the Start Menu in which you would like to create the program's shortcuts. You can also enter a name to create a new directory.</source>
<translation><E9><80><89><E6><8B><A9><E6><82><A8><E5><B8><8C><E6><9C>E5><9C><A8><E5><85><B6><E4><B8><AD><E5>
<88>E5><BB><BA><E7><A8><8B><E5><BA><8F><E5><BF><AB><E6><8D><B7><E6><96><B9><E5><BC><8F><E7><9A><84><E5><BC><80><E5><A7>
<8B><E8><8F><9C><E5><8D><95><E3><80><82><E6><82><A8><E8><BF><98><E5><8F><AF><E4><BB><A5><E8><BE><93><E5><85><A5><E5><90><8D><E7><A7><B0><E4><BB><A5><E5><88>E5><BB><BA><E6><96><B0><E6><96><87><E4><BB><B6><E5><A4><B9><E3><80><82></translation>
</message>
</context>
@@ -2299,7 +2299,7 @@ Please copy the installer to a local drive</source>
<translation><E5><AE><89><E8><A3><85><E6><96><87><E4><BB><B6><E5><A4><B9></translation>
</message>
<message>
- <source>Please specify the folder where %1 will be installed.</source>
+ <source>Please specify the directory where %1 will be installed.</source>
<translation><E8><AF><B7><E6><8C><87><E5><AE><9A><E5><B0><86><E5><9C><A8><E5><85><B6><E4><B8><AD><E5><AE><89>
<E8><A3><85> %1 <E7><9A><84><E6><96><87><E4><BB><B6><E5><A4><B9><E3><80><82></translation>
</message>
<message>