diff --git a/src/Plugin/Field/FieldType/PinyinShortcodeItem.php b/src/Plugin/Field/FieldType/PinyinShortcodeItem.php
index 6b75ead07e54955ddbbc6d23ae6ae23007673fcb..e354d4c806b9cad4ba5b13bb10689b156c3f7c54 100644
--- a/src/Plugin/Field/FieldType/PinyinShortcodeItem.php
+++ b/src/Plugin/Field/FieldType/PinyinShortcodeItem.php
@@ -3,6 +3,7 @@
 namespace Drupal\pinyin\Plugin\Field\FieldType;
 
 use Drupal\Core\Field\Plugin\Field\FieldType\StringItem;
+use Drupal\Core\Form\FormStateInterface;
 
 /**
  * Defines the "pinyin_shortcode" entity field type.
@@ -17,6 +18,29 @@ use Drupal\Core\Field\Plugin\Field\FieldType\StringItem;
  */
 class PinyinShortcodeItem extends StringItem {
 
+  /**
+   * {@inheritdoc}
+   */
+  public static function defaultStorageSettings() {
+    return [
+      'source_field' => NULL,
+    ] + parent::defaultStorageSettings();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data) {
+    $element = parent::storageSettingsForm($form, $form_state, $has_data);
+
+    $element['source_field'] = [
+      '#type' => 'textfield',
+      '#title' => t('Source field'),
+    ];
+
+    return $element;
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -34,14 +58,17 @@ class PinyinShortcodeItem extends StringItem {
     parent::preSave();
 
     $entity = $this->getEntity();
+    if (!$source_field = $this->getSetting('source_field')) {
+      $source_field = $entity->getEntityType()->getKey('label');
+    }
     if (!$entity->isNew()) {
-      if ($entity->label() == $entity->original->label()) {
+      if ($entity->$source_field->value == $entity->original->$source_field->value) {
         return;
       }
     }
 
     $this->value = \Drupal::service('pinyin.shortcode')
-      ->transliterate($entity->label(), 'en', '?', $this->getSetting('max_length'));
+      ->transliterate($entity->$source_field->value, 'en', '?', $this->getSetting('max_length'));
   }
 
 }