diff --git a/config/pinyin.schema.yml b/config/pinyin.schema.yml
new file mode 100644
index 0000000000000000000000000000000000000000..d609d83849215714ded1cbdb8891e9e76d40bdb4
--- /dev/null
+++ b/config/pinyin.schema.yml
@@ -0,0 +1,7 @@
+field.storage_settings.pinyin_shortcode:
+  type: field.storage_settings.string
+  label: 'Pinyin shortcode settings'
+  mapping:
+    max_length:
+      type: integer
+      label: 'Maximum length'