diff --git a/src/controllers/api/purchaseController.ts b/src/controllers/api/purchaseController.ts
index 4658da51..ce8c873b 100644
--- a/src/controllers/api/purchaseController.ts
+++ b/src/controllers/api/purchaseController.ts
@@ -13,7 +13,6 @@ export const purchaseController: RequestHandler = async (req, res) => {
     try {
         const inventory = await getInventory(accountId);
         
-        // 记录购买前的货币状态
         const beforePurchase = {
             RegularCredits: inventory.RegularCredits,
             PremiumCredits: inventory.PremiumCredits,
@@ -26,7 +25,6 @@ export const purchaseController: RequestHandler = async (req, res) => {
         const response = await handlePurchase(purchaseRequest, inventory);
         await inventory.save();
         
-        // 记录购买后的货币状态
         const afterPurchase = {
             RegularCredits: inventory.RegularCredits,
             PremiumCredits: inventory.PremiumCredits,
@@ -37,7 +35,6 @@ export const purchaseController: RequestHandler = async (req, res) => {
         
         res.json(response);
         
-        // 立即发送货币更新广播，确保客户端实时同步
         sendWsBroadcastTo(accountId, { 
             update_inventory: true,
             currency_update: {
@@ -50,7 +47,6 @@ export const purchaseController: RequestHandler = async (req, res) => {
     } catch (error) {
         logger.error(`Purchase failed for account ${accountId}:`, error);
         
-        // 返回详细的错误信息给客户端
         if (error instanceof Error && error.message.includes('Insufficient')) {
             res.status(400).json({
                 error: 'INSUFFICIENT_CURRENCY',
diff --git a/src/services/inventoryService.ts b/src/services/inventoryService.ts
index 143d7010..642a9885 100644
--- a/src/services/inventoryService.ts
+++ b/src/services/inventoryService.ts
@@ -1259,7 +1259,6 @@ export const updateCurrency = (
 ): IInventoryChanges => {
     if (price != 0 && isCurrencyTracked(inventory, usePremium)) {
         if (usePremium) {
-            // 验证白金余额是否足够
             if (validateBalance) {
                 const totalPlatinum = inventory.PremiumCredits + inventory.PremiumCreditsFree;
                 if (totalPlatinum < price) {
@@ -1278,7 +1277,6 @@ export const updateCurrency = (
             inventory.PremiumCredits -= price;
             logger.debug(`currency changes `, { PremiumCredits: -price });
         } else {
-            // 验证现金余额是否足够
             if (validateBalance && inventory.RegularCredits < price) {
                 throw new Error(`Insufficient credits balance. Required: ${price}, Available: ${inventory.RegularCredits}`);
             }