diff --git a/packages/hydrooj/locales/en.yaml b/packages/hydrooj/locales/en.yaml
index b2f42c414..f7e3b6d7e 100644
--- a/packages/hydrooj/locales/en.yaml
+++ b/packages/hydrooj/locales/en.yaml
@@ -6,6 +6,7 @@ contest_edit: Contest Edit
 contest_main: Contest
 contest_scoreboard: Scoreboard
 discussion_create: Create Discussion
+discussion_detail: Discussion Detail
 discussion_edit: Discussion Edit
 discussion_main: Discussion
 discussion_node: Discussion
@@ -38,6 +39,7 @@ main: Home
 manage_module: Module Management
 manage_script: Scripts
 manage_setting: System Settings
+manage_user_import: Import Users
 manage: System Manage
 no_translation_warn: <blockquote class="warn">This part of content is under translation.</blockquote>
 page.problem_detail.sidebar.show_category: Click to Show
@@ -80,6 +82,9 @@ setting_info_domain: Personal Info
 setting_info: Personal Info
 setting_preference: Preference
 setting_privacy: Privacy
+setting_server: Server Settings
+setting_session: Session Settings
+setting_smtp: SMTP Settings
 setting_usage: Usage Preference
 timeago_locale: en_US
 training_create: Training Create
diff --git a/packages/hydrooj/locales/zh_CN.yaml b/packages/hydrooj/locales/zh_CN.yaml
index 3a4460fc2..b825ce946 100644
--- a/packages/hydrooj/locales/zh_CN.yaml
+++ b/packages/hydrooj/locales/zh_CN.yaml
@@ -220,6 +220,7 @@ Discussion node {1} already exists.: 讨论节点 {1} 已经存在。
 Discussion node {1} not found.: 讨论节点 {1} 不存在。
 Discussion Nodes: 讨论节点
 discussion_create: 创建讨论
+discussion_detail: 讨论详情
 discussion_edit: 编辑讨论
 discussion_main: 讨论
 discussion_node: 讨论
@@ -410,6 +411,7 @@ manage_dashboard: 控制面板
 manage_join_applications: 加域申请
 manage_module: 管理模块
 manage_setting: 系统设置
+manage_user_import: 导入用户
 manage: 管理
 Manage: 管理
 Manager: 管理
@@ -625,6 +627,9 @@ setting_domain: 域设置
 setting_info_domain: 个人信息
 setting_info: 个人信息
 setting_privacy: 隐私
+setting_server: 服务器设置
+setting_session: Session 设置
+setting_smtp: SMTP 设置
 setting_usage: 使用偏好
 Settings: 设置
 Share: 分享
diff --git a/packages/hydrooj/src/script/rating.ts b/packages/hydrooj/src/script/rating.ts
index 0341baf6a..d24b238f6 100644
--- a/packages/hydrooj/src/script/rating.ts
+++ b/packages/hydrooj/src/script/rating.ts
@@ -1,7 +1,7 @@
 /* eslint-disable no-await-in-loop */
 import { NumericDictionary } from 'lodash';
-import { ObjectID } from 'mongodb';
-import { Tdoc, Pdoc } from '../interface';
+import { ObjectID, FilterQuery } from 'mongodb';
+import { Tdoc, Pdoc, Udoc } from '../interface';
 import * as domain from '../model/domain';
 import * as contest from '../model/contest';
 import * as problem from '../model/problem';
@@ -108,10 +108,12 @@ export async function calcLevel(domainId: string, report: Function) {
     bulk = coll.initializeUnorderedBulkOp();
     for (let i = 0; i < levels.length; i++) {
         report({ message: 'Updating users levelled {0}'.format(levels[i][0]) });
-        bulk.find({
+        const query: FilterQuery<Udoc> = {
             domainId,
-            $and: [{ rank: { $lte: levels[i][1] } }, { rank: { $gt: levels[i + 1][1] } }],
-        }).update({ $set: { level: levels[i][0] } });
+            $and: [{ rank: { $lte: levels[i][1] } }],
+        };
+        if (i < levels.length - 1) query.$and.push({ rank: { $gt: levels[i + 1][1] } });
+        bulk.find(query).update({ $set: { level: levels[i][0] } });
     }
     const i = levels.length - 1;
     report({ message: 'Updating users levelled {0}'.format(levels[i][0]) });