diff --git a/scripts/download-all.sh b/scripts/download-all.sh
new file mode 100644
index 0000000..783741a
--- /dev/null
+++ b/scripts/download-all.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+set -o errexit
+set -o nounset
+set -o pipefail
+
+export OPENSSL_CONF="openssl.cnf"
+args=(tld)
+for year in {2020..2023}; do
+  for term in {1..3}; do
+    semester="${year}-$((year + 1))-${term}"
+    args+=(--semester="${semester}")
+  done
+done
+"${args[@]}"
diff --git a/thu_learn_downloader/client/homework.py b/thu_learn_downloader/client/homework.py
index 955a3aa..c731bef 100644
--- a/thu_learn_downloader/client/homework.py
+++ b/thu_learn_downloader/client/homework.py
@@ -79,7 +79,7 @@
     grade_attachment: Optional[Attachment]
     grade_content: str = Field("", alias="pynr")
     grade_time: Optional[datetime] = Field(alias="pysj")
-    grade: Optional[int | str] = Field(alias="cj")
+    grade: Optional[float | str] = Field(alias="cj")
     grader_name: str = Field("", alias="jsm")
     number: int = Field(alias="wz")
     start_time: datetime = Field(alias="kssj")