diff --git a/application/language/zh-Hant/sales_lang.php b/application/language/zh-Hant/sales_lang.php
index e1a7d85c2..146e56935 100644
--- a/application/language/zh-Hant/sales_lang.php
+++ b/application/language/zh-Hant/sales_lang.php
@@ -26,7 +26,7 @@ $lang["sales_customer_address"] = "客戶地址";
 $lang["sales_customer_discount"] = "折扣";
 $lang["sales_customer_email"] = "客戶電郵地址";
 $lang["sales_customer_location"] = "客戶所在地";
-$lang["sales_customer_mailchimp_status"] = "";
+$lang["sales_customer_mailchimp_status"] = "Mailchimp電子報行銷狀態";
 $lang["sales_customer_optional"] = "非必需";
 $lang["sales_customer_required"] = "必需";
 $lang["sales_customer_total"] = "總數";
@@ -41,39 +41,39 @@ $lang["sales_delete_entire_sale"] = "刪除全部銷售資料";
 $lang["sales_delete_successful"] = "您已成功刪除銷售資料";
 $lang["sales_delete_unsuccessful"] = "銷售資料刪除失敗";
 $lang["sales_description_abbrv"] = "倒序";
-$lang["sales_discard"] = "";
+$lang["sales_discard"] = "放棄";
 $lang["sales_discard_quote"] = "";
 $lang["sales_discount"] = "折扣 %";
 $lang["sales_discount_included"] = "% 折扣";
 $lang["sales_discount_short"] = "%";
 $lang["sales_due"] = "由";
-$lang["sales_due_filter"] = "";
+$lang["sales_due_filter"] = "由...選項";
 $lang["sales_edit"] = "編輯";
 $lang["sales_edit_item"] = "編輯產品";
 $lang["sales_edit_sale"] = "編輯銷售資料";
 $lang["sales_email_receipt"] = "Email 銷售單";
 $lang["sales_employee"] = "員工";
-$lang["sales_entry"] = "";
+$lang["sales_entry"] = "加入項目";
 $lang["sales_error_editing_item"] = "編輯產品錯誤";
 $lang["sales_find_or_scan_item"] = "查找/掃描商品";
 $lang["sales_find_or_scan_item_or_receipt"] = "查找/掃描產品或收貨單";
 $lang["sales_giftcard"] = "禮金券";
-$lang["sales_giftcard_balance"] = "Giftcard Balance";
+$lang["sales_giftcard_balance"] = "䄠金劵餘額";
 $lang["sales_giftcard_number"] = "禮金券編號";
-$lang["sales_group_by_category"] = "";
-$lang["sales_group_by_type"] = "";
+$lang["sales_group_by_category"] = "以類別分類";
+$lang["sales_group_by_type"] = "以類型分類";
 $lang["sales_id"] = "銷售編號";
 $lang["sales_include_prices"] = "";
-$lang["sales_invoice"] = "Invoice";
-$lang["sales_invoice_confirm"] = "This invoice will be sent to";
-$lang["sales_invoice_enable"] = "Create Invoice";
-$lang["sales_invoice_filter"] = "Invoices";
-$lang["sales_invoice_no_email"] = "This customer does not have a valid email address";
-$lang["sales_invoice_number"] = "Invoice #";
-$lang["sales_invoice_number_duplicate"] = "Please enter an unique invoice number";
-$lang["sales_invoice_sent"] = "Invoice sent to";
-$lang["sales_invoice_unsent"] = "Invoice failed to be sent to";
-$lang["sales_invoice_update"] = "Recount";
+$lang["sales_invoice"] = "發票";
+$lang["sales_invoice_confirm"] = "已傳送發票到";
+$lang["sales_invoice_enable"] = "建立發票";
+$lang["sales_invoice_filter"] = "發票選項";
+$lang["sales_invoice_no_email"] = "此客戶沒有正確的電郵地址";
+$lang["sales_invoice_number"] = "發票編號#";
+$lang["sales_invoice_number_duplicate"] = "重覆的發票號碼";
+$lang["sales_invoice_sent"] = "發票已發送到";
+$lang["sales_invoice_unsent"] = "發票傳送失敗";
+$lang["sales_invoice_update"] = "重新清點";
 $lang["sales_item_insufficient_of_stock"] = "產品庫存不足";
 $lang["sales_item_name"] = "產品名稱";
 $lang["sales_item_number"] = "產品 #";