diff --git a/schedule.org b/schedule.org
index f2041d8..b9a63a4 100644
--- a/schedule.org
+++ b/schedule.org
@@ -47,7 +47,7 @@
 | 04/08/25 |             |     12 | Tu    |           |                                      |
 | 04/10/25 |             |     12 | Th    |           |                                      |
 | 04/15/25 |             |     13 | Tu    |           |                                      |
-| 04/17/25 |             |     13 | Th    |           |                                      |
+| 04/17/25 |             |     13 | Th    | Xingche   | Guest Lecture                        |
 | 04/22/25 |             |     14 | Tu    |           |                                      |
 | 04/24/25 |             |     14 | Th    |           |                                      |
 | 04/29/25 |             |     15 | Tu    |           |                                      |