diff --git a/b1.txt b/b1.txt
new file mode 100644
index 0000000..50cb93c
--- /dev/null
+++ b/b1.txt
@@ -0,0 +1,3 @@
+b1
+* b1   c03374e add items
+  main c03374e [origin/main] add items
diff --git a/softeng b/softeng
new file mode 160000
index 0000000..c03374e
--- /dev/null
+++ b/softeng
@@ -0,0 +1 @@
+Subproject commit c03374ed84b1ebc00fae09fb5cd003d065efe824