diff --git a/src/main/java/com/demo/order/OrderService.java b/src/main/java/com/demo/order/OrderService.java
index cc19177..ea6e85f 100644
--- a/src/main/java/com/demo/order/OrderService.java
+++ b/src/main/java/com/demo/order/OrderService.java
@@ -16,7 +16,7 @@ public class OrderService {
     public BigDecimal total(Order order) {
         BigDecimal sum = BigDecimal.ZERO;
         for (OrderLine line : order.getLines()) {
-            // 会员 9 折
+            // 会员 9 折（v2 调整）
             if (order.getCustomer().getLevel() == 2) {
                 sum = sum.multiply(BigDecimal.valueOf(0.9));
             }