diff --git a/lib/zin/wg/thinkpffa/v1.php b/lib/zin/wg/thinkpffa/v1.php
index f853a319ee..8cac8197cb 100644
--- a/lib/zin/wg/thinkpffa/v1.php
+++ b/lib/zin/wg/thinkpffa/v1.php
@@ -1,6 +1,11 @@
 <?php
 declare(strict_types=1);
 namespace zin;
+
+/**
+ * 思引波特五力模型部件类。
+ * thinmory porter's five forces model widget class.
+ */
 class thinkPffa extends wg
 {
     protected static array $defineProps = array(