diff --git a/web/app/controllers/group_assignment.php b/web/app/controllers/group_assignment.php
index 38c9c1b..95abf27 100644
--- a/web/app/controllers/group_assignment.php
+++ b/web/app/controllers/group_assignment.php
@@ -52,6 +52,7 @@
 	$usernames = [];
 	$n_users = count($users);
 	$n_problems = count($problems);
+	$submission_end_time = min(new DateTime(), DateTime::createFromFormat('Y-m-d H:i:s', $assignment['end_time']))->format('Y-m-d H:i:s');
 
 	foreach ($problems as $problem) {
 		$problem_ids[] = $problem['problem_id'];
@@ -76,7 +77,7 @@
 		];
 
 		foreach ($problem_ids as $problem_id) {
-			$cond = "submitter = '{$user['username']}' AND problem_id = $problem_id";
+			$cond = "submitter = '{$user['username']}' AND problem_id = $problem_id AND submit_time <= '$submission_end_time'";
 			$submission = DB::selectFirst("SELECT id, score FROM submissions INNER JOIN (SELECT MAX(score) AS score FROM submissions WHERE $cond) AS max USING (score) WHERE $cond ORDER BY submit_time DESC");
 
 			if ($submission) {
@@ -156,14 +157,23 @@ $('#standings').long_table(
 	},
 	{
 		div_classes: ['card', 'my-3', 'table-responsive', 'text-center'],
-		table_classes: ['table', 'uoj-table', 'mb-0'],
+		table_classes: ['table', 'uoj-table', 'table-bordered', 'mb-0'],
 		page_len: 20,
+		print_before_table: function() {
+			var html = '';
+
+			html += '<div class="card-header bg-transparent text-muted text-start small">' +
+					'成绩统计截止时间：<?= $submission_end_time ?>' +
+				'</div>';
+
+			return html;
+		}
 	}
 );
 </script>
 
-<!-- end left col -->
 </div>
+<!-- end left col -->
 
 <aside class="col-lg-3 mt-3 mt-lg-0">
 <!-- right col -->
diff --git a/web/app/controllers/group_manage.php b/web/app/controllers/group_manage.php
index ce765b5..d69b93f 100644
--- a/web/app/controllers/group_manage.php
+++ b/web/app/controllers/group_manage.php
@@ -332,6 +332,8 @@ EOD);
 			<div class="tab-pane active" id="assignments">
 				<?php
 						$now = new DateTime();
+	$hidden_time = new DateTime();
+	$hidden_time->sub(new DateInterval('P7D'));
 	echoLongTable(
 		['*'],
 		'groups_assignments',
@@ -346,21 +348,23 @@ EOD);
 		<th style="width:8em">操作</th>
 	</tr>
 EOD,
-		function($row) use ($group, $now) {
+		function($row) use ($group, $now, $hidden_time) {
 			$list = queryProblemList($row['list_id']);
 			$end_time = DateTime::createFromFormat('Y-m-d H:i:s', $row['end_time']);
 
 			echo '<tr>';
 			echo '<td class="text-center">', $list['id'], '</td>';
 			echo '<td>', '<a class="text-decoration-none" href="/group/', $group['id'], '/assignment/', $list['id'],'">', HTML::escape($list['title']), '</a>', '</td>';
-			if ($end_time < $now) {
+			if ($end_time < $hidden_time) {
+				echo '<td class="text-secondary">已隐藏</td>';
+			} elseif ($end_time < $now) {
 				echo '<td class="text-danger">已结束</td>';
 			} else {
 				echo '<td class="text-success">进行中</td>';
 			}
 			echo '<td>', $end_time->format('Y-m-d H:i:s'), '</td>';
 			echo '<td>';
-			echo '<a class="text-decoration-none d-inline-block align-middle" href="/problem_list/', $list['id'], '/edit">编辑</a> ';
+			echo '<a class="text-decoration-none d-inline-block align-middle" href="/problem_list/', $list['id'], '/manage">编辑</a> ';
 			echo ' <form class="d-inline-block" method="POST" onsubmit=\'return confirm("你真的要移除这份作业吗？移除作业不会删除题单。")\'>'
 					. '<input type="hidden" name="_token" value="' . crsf_token() . '">'
 					. '<input type="hidden" name="list_id" value="' . $list['id'] . '">'
@@ -390,6 +394,7 @@ EOD,
 							<li>请为学生预留合理的完成作业的时间。</li>
 							<li>排行榜将在结束后停止更新。</li>
 							<li>如需延长结束时间请删除后再次添加，排行数据不会丢失。</li>
+							<li>作业结束七天后将会自动在小组主页中隐藏，但仍可直接通过 URL 访问。</li>
 						</ul>
 					</div>
 				</div>
diff --git a/web/app/libs/uoj-query-lib.php b/web/app/libs/uoj-query-lib.php
index 8bd4c6f..e6d69ad 100644
--- a/web/app/libs/uoj-query-lib.php
+++ b/web/app/libs/uoj-query-lib.php
@@ -149,7 +149,7 @@ function queryGroupAssignments($group_id) {
 	return DB::selectAll("select a.id as id, a.list_id as list_id, a.end_time as end_time, b.title from groups_assignments a left join lists b on a.list_id = b.id where a.group_id = $group_id order by a.end_time asc", MYSQLI_ASSOC);
 }
 function queryGroupActiveAssignments($group_id) {
-	return DB::selectAll("select a.id as id, a.group_id as group_id, a.list_id as list_id, a.end_time as end_time, b.title from groups_assignments a left join lists b on a.list_id = b.id where a.group_id = $group_id and a.end_time > addtime(now(), '-168:00:00') order by a.end_time asc", MYSQLI_ASSOC);
+	return DB::selectAll("select a.id as id, a.group_id as group_id, a.list_id as list_id, a.end_time as end_time, b.title from groups_assignments a left join lists b on a.list_id = b.id where a.group_id = $group_id and a.end_time >= addtime(now(), '-168:00:00') order by a.end_time asc", MYSQLI_ASSOC);
 }
 function queryAssignmentByGroupListID($group_id, $list_id) {
 	return DB::selectFirst("select * from groups_assignments where list_id='$list_id' and group_id='$group_id'", MYSQLI_ASSOC);
diff --git a/web/app/views/contest-backstage.php b/web/app/views/contest-backstage.php
index c6d788b..a1de082 100644
--- a/web/app/views/contest-backstage.php
+++ b/web/app/views/contest-backstage.php
@@ -21,8 +21,16 @@
 		</div>
 	<?php endif ?>
 	<?php if ($standings_data): ?>
-		<div class="tab-pane card-body" id="tab-standings">
-			<?php uojIncludeView('contest-standings', array_merge($standings_data, ['no_bs5_card' => ''])) ?>
+		<div class="tab-pane" id="tab-standings">
+			<?php 
+			uojIncludeView('contest-standings', array_merge(
+				$standings_data,
+				[
+					'standings_config' => [
+						'div_classes' => ['table-responsive', 'mb-3']
+					]
+				]
+			)); ?>
 		</div>
 	<?php endif ?>
 </div>
diff --git a/web/app/views/contest-standings.php b/web/app/views/contest-standings.php
index 67a2d73..ea0ee5d 100644
--- a/web/app/views/contest-standings.php
+++ b/web/app/views/contest-standings.php
@@ -1,14 +1,13 @@
-<div id="standings" class="
-<?php if (!isset($no_bs5_card)): ?>
-	card card-default
-<?php endif ?>"></div>
+<div id="standings"></div>
 
 <script type="text/javascript">
-standings_version=<?=$contest['extra_config']['standings_version']?>;
-show_self_reviews=<?=isset($show_self_reviews) && $show_self_reviews ? 'true' : 'false' ?>;
-contest_id=<?=$contest['id']?>;
-standings=<?=json_encode($standings)?>;
-score=<?=json_encode($score)?>;
-problems=<?=json_encode($contest_data['problems'])?>;
-$(document).ready(showStandings());
+var standings_version=<?=$contest['extra_config']['standings_version']?>;
+var show_self_reviews=<?=isset($show_self_reviews) && $show_self_reviews ? 'true' : 'false' ?>;
+var contest_id=<?=$contest['id']?>;
+var standings=<?=json_encode($standings)?>;
+var score=<?=json_encode($score)?>;
+var problems=<?=json_encode($contest_data['problems'])?>;
+var standings_config = <?=json_encode(isset($standings_config) ? $standings_config : ['_config' => true])?>;
+
+$(document).ready(showStandings(standings_config));
 </script>
diff --git a/web/js/uoj.js b/web/js/uoj.js
index 513b4ce..1b218b7 100644
--- a/web/js/uoj.js
+++ b/web/js/uoj.js
@@ -541,18 +541,16 @@ $.fn.long_table = function(data, cur_page, header_row, get_row_str, config) {
 		
 		$(table_div).append(
 			$('<div class="' + div_classes.join(' ') + '" />').append(
+				(typeof config.print_before_table === 'function' ? config.print_before_table() : ''),
 				$('<table class="' + table_classes.join(' ') + '" />').append(
 					$('<thead>' + header_row + '</thead>')
 				).append(
 					tbody
-				)
+				),
+				(typeof config.print_after_table === 'function' ? config.print_after_table() : '')
 			)
 		);
 		
-		if (config.print_after_table != undefined) {
-			$(table_div).append(config.print_after_table());
-		}
-		
 		var get_page_li = function(p, h) {
 			if (p == -1) {
 				return $('<li class="page-item"></li>').addClass('disabled').append($('<a class="page-link"></a>').append(h));
@@ -1129,7 +1127,7 @@ function showCommentReplies(id, replies) {
 }
 
 // standings
-function showStandings() {
+function showStandings(config) {
 	$("#standings").long_table(
 		standings,
 		1,
@@ -1178,9 +1176,9 @@ function showStandings() {
 			col_tr += '</tr>';
 			return col_tr;
 		}, {
-			div_classes: ['table-responsive'],
-			table_classes: ['table', 'table-bordered', 'text-center', 'align-middle', 'uoj-table', 'uoj-standings-table', 'mb-0'],
-			page_len: 100,
+			div_classes: config.div_classes ? config.div_classes : ['table-responsive', 'card', 'my-3'],
+			table_classes: config.table_classes ? config.table_classes : ['table', 'table-bordered', 'text-center', 'align-middle', 'uoj-table', 'uoj-standings-table', 'mb-0'],
+			page_len: config.page_len ? config.page_len : 50,
 			print_after_table: function() {
 				return '<div class="card-footer bg-transparent text-end text-muted">' + uojLocale("contests::n participants", standings.length) + '</div><script>if (window.MathJax) window.MathJax.typeset();</scr' + 'ipt>';
 			}