diff --git a/hinghwa-dict-backend/quiz/migrations/0004_auto_20231019_1116.py b/hinghwa-dict-backend/quiz/migrations/0004_auto_20231019_1116.py
deleted file mode 100644
index b32150d1..00000000
--- a/hinghwa-dict-backend/quiz/migrations/0004_auto_20231019_1116.py
+++ /dev/null
@@ -1,83 +0,0 @@
-# Generated by Django 3.1.14 on 2023-10-19 03:16
-
-from django.conf import settings
-from django.db import migrations, models
-import django.db.models.deletion
-
-
-class Migration(migrations.Migration):
-    dependencies = [
-        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
-        ("quiz", "0003_quiz_voice_source"),
-    ]
-
-    operations = [
-        migrations.CreateModel(
-            name="Paper",
-            fields=[
-                (
-                    "title",
-                    models.CharField(blank=True, max_length=50, verbose_name="试卷标题"),
-                ),
-                ("quantity", models.IntegerField(blank=True, verbose_name="题目数量")),
-                (
-                    "id",
-                    models.CharField(
-                        max_length=20,
-                        primary_key=True,
-                        serialize=False,
-                        verbose_name="ID",
-                    ),
-                ),
-            ],
-        ),
-        migrations.AddField(
-            model_name="quiz",
-            name="type",
-            field=models.CharField(blank=True, max_length=50, verbose_name="问题类型"),
-        ),
-        migrations.CreateModel(
-            name="Record",
-            fields=[
-                (
-                    "id",
-                    models.AutoField(
-                        auto_created=True,
-                        primary_key=True,
-                        serialize=False,
-                        verbose_name="ID",
-                    ),
-                ),
-                ("timestamp", models.DateTimeField(blank=True, verbose_name="时间")),
-                (
-                    "correct_answer",
-                    models.IntegerField(blank=True, verbose_name="答对数量"),
-                ),
-                (
-                    "exam",
-                    models.ManyToManyField(
-                        related_name="exam_record", to="quiz.Paper", verbose_name="答卷记录"
-                    ),
-                ),
-                (
-                    "user_answer",
-                    models.ForeignKey(
-                        on_delete=django.db.models.deletion.CASCADE,
-                        related_name="user",
-                        to=settings.AUTH_USER_MODEL,
-                        verbose_name="词单作者",
-                    ),
-                ),
-            ],
-        ),
-        migrations.AddField(
-            model_name="paper",
-            name="quizzes",
-            field=models.ManyToManyField(
-                blank=True,
-                related_name="exam_questions",
-                to="quiz.Quiz",
-                verbose_name="问题列表",
-            ),
-        ),
-    ]
diff --git a/hinghwa-dict-backend/quiz/paper/dto/record_all.py b/hinghwa-dict-backend/quiz/paper/dto/record_all.py
deleted file mode 100644
index 9c5bf9b8..00000000
--- a/hinghwa-dict-backend/quiz/paper/dto/record_all.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from ...models import Record
-
-
-def record_all(record: Record):
-    response = {"timestamp": record.timestamp, "correct_answer": record.correct_answer}
-    return response