diff --git a/1.4/Languages/ChineseSimplified/DefInjected/HediffDef/Immunodeficiency.xml b/1.4/Languages/ChineseSimplified/DefInjected/HediffDef/Immunodeficiency.xml
new file mode 100644
index 0000000..ea8392b
--- /dev/null
+++ b/1.4/Languages/ChineseSimplified/DefInjected/HediffDef/Immunodeficiency.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<LanguageData>
+  <Immunodeficiency.label>免疫缺陷</Immunodeficiency.label>
+  <Immunodeficiency.description>很容易得病。</Immunodeficiency.description>
+  <Immunodeficiency.stages.0.label>较轻</Immunodeficiency.stages.0.label>
+  <Immunodeficiency.stages.1.label>严重</Immunodeficiency.stages.1.label>
+  <Immunodeficiency.stages.2.label>极重</Immunodeficiency.stages.2.label>
+</LanguageData>
\ No newline at end of file