diff --git a/app/Payments/AlipayF2F.php b/app/Payments/AlipayF2F.php
index 3fba0c1f..66427ac8 100644
--- a/app/Payments/AlipayF2F.php
+++ b/app/Payments/AlipayF2F.php
@@ -1,8 +1,5 @@
 <?php
 
-/**
- * 自己写别抄，抄NMB抄
- */
 namespace App\Payments;
 
 class AlipayF2F {
diff --git a/app/Payments/MGate.php b/app/Payments/MGate.php
deleted file mode 100644
index cb0be56e..00000000
--- a/app/Payments/MGate.php
+++ /dev/null
@@ -1,102 +0,0 @@
-<?php
-
-/**
- * 自己写别抄，抄NMB抄
- */
-namespace App\Payments;
-
-use \Curl\Curl;
-
-class MGate {
-    private $config;
-
-    public function __construct($config)
-    {
-        $this->config = $config;
-    }
-
-    public function form()
-    {
-        return [
-            'mgate_url' => [
-                'label' => 'API地址',
-                'description' => '',
-                'type' => 'input',
-            ],
-            'mgate_app_id' => [
-                'label' => 'APPID',
-                'description' => '',
-                'type' => 'input',
-            ],
-            'mgate_app_secret' => [
-                'label' => 'AppSecret',
-                'description' => '',
-                'type' => 'input',
-            ],
-            'mgate_source_currency' => [
-                'label' => '源货币',
-                'description' => '默认CNY',
-                'type' => 'input'
-            ]
-        ];
-    }
-
-    public function pay($order)
-    {
-        $params = [
-            'out_trade_no' => $order['trade_no'],
-            'total_amount' => $order['total_amount'],
-            'notify_url' => $order['notify_url'],
-            'return_url' => $order['return_url']
-        ];
-        if (isset($this->config['mgate_source_currency'])) {
-            $params['source_currency'] = $this->config['mgate_source_currency'];
-        }
-        $params['app_id'] = $this->config['mgate_app_id'];
-        ksort($params);
-        $str = http_build_query($params) . $this->config['mgate_app_secret'];
-        $params['sign'] = md5($str);
-        $curl = new Curl();
-        $curl->setUserAgent('MGate');
-        $curl->setOpt(CURLOPT_SSL_VERIFYPEER, 0);
-        $curl->post($this->config['mgate_url'] . '/v1/gateway/fetch', http_build_query($params));
-        $result = $curl->response;
-        if (!$result) {
-            abort(500, '网络异常');
-        }
-        if ($curl->error) {
-            if (isset($result->errors)) {
-                $errors = (array)$result->errors;
-                abort(500, $errors[array_keys($errors)[0]][0]);
-            }
-            if (isset($result->message)) {
-                abort(500, $result->message);
-            }
-            abort(500, '未知错误');
-        }
-        $curl->close();
-        if (!isset($result->data->trade_no)) {
-            abort(500, '接口请求失败');
-        }
-        return [
-            'type' => 1, // 0:qrcode 1:url
-            'data' => $result->data->pay_url
-        ];
-    }
-
-    public function notify($params)
-    {
-        $sign = $params['sign'];
-        unset($params['sign']);
-        ksort($params);
-        reset($params);
-        $str = http_build_query($params) . $this->config['mgate_app_secret'];
-        if ($sign !== md5($str)) {
-            return false;
-        }
-        return [
-            'trade_no' => $params['out_trade_no'],
-            'callback_no' => $params['trade_no']
-        ];
-    }
-}
diff --git a/app/Payments/StripeAlipay.php b/app/Payments/StripeAlipay.php
index 43669136..48e1de87 100644
--- a/app/Payments/StripeAlipay.php
+++ b/app/Payments/StripeAlipay.php
@@ -1,8 +1,5 @@
 <?php
 
-/**
- * 自己写别抄，抄NMB抄
- */
 namespace App\Payments;
 
 use Stripe\Source;
diff --git a/app/Payments/StripeCredit.php b/app/Payments/StripeCredit.php
index a066e835..ed4a58bb 100644
--- a/app/Payments/StripeCredit.php
+++ b/app/Payments/StripeCredit.php
@@ -1,8 +1,5 @@
 <?php
 
-/**
- * 自己写别抄，抄NMB抄
- */
 namespace App\Payments;
 
 use Stripe\Source;
diff --git a/app/Payments/StripeWepay.php b/app/Payments/StripeWepay.php
index 8b0fc1b0..2d445f85 100644
--- a/app/Payments/StripeWepay.php
+++ b/app/Payments/StripeWepay.php
@@ -1,8 +1,5 @@
 <?php
 
-/**
- * 自己写别抄，抄NMB抄
- */
 namespace App\Payments;
 
 use Stripe\Source;
diff --git a/app/Utils/Helper.php b/app/Utils/Helper.php
index 43eeef96..ca49dcc0 100644
--- a/app/Utils/Helper.php
+++ b/app/Utils/Helper.php
@@ -36,9 +36,9 @@ class Helper
 
     public static function exchange($from, $to)
     {
-        $result = file_get_contents('https://api.exchangerate.host/latest?symbols=' . $to . '&base=' . $from);
+        $result = file_get_contents("https://cdn.jsdelivr.net/gh/fawazahmed0/currency-api@1/latest/currencies/" . $from . "/" . $to . ".json");
         $result = json_decode($result, true);
-        return $result['rates'][$to];
+        return $result[$to];
     }
 
     public static function randomChar($len, $special = false)