diff --git a/mailer.py b/mailer.py
index 4352300..6584646 100644
--- a/mailer.py
+++ b/mailer.py
@@ -323,11 +323,11 @@ def collect_report_data() -> dict:
 
             # 转为列表并排序 (按 LD 数降序)
             for owner, info in user_boards.items():
-                boards_sorted = sorted(info["boards"], key=lambda x: (x[0], x[1], x[2]))
+                boards_sorted = sorted(info["boards"], key=lambda x: x[2])
                 user_board_agg.append({
                     "user": owner,
                     "ld_count": len(boards_sorted),
-                    "boards": ", ".join(f"R{b[0]}C{b[1]}LD{b[2]}" for b in boards_sorted),
+                    "boards": ", ".join(f"LD{b[2]}" for b in boards_sorted),
                     "racks": ", ".join(str(r) for r in sorted(info["racks"])) if info["racks"] else "—",
                     "pods": ", ".join(sorted(info["pods"])) if info["pods"] else "—",
                     "designs": "; ".join(sorted(info["designs"])) if info["designs"] else "—",