diff --git a/rt-thread-version/rt-thread-standard/tutorial/experimental-manual/experimental-manual.pdf b/rt-thread-version/rt-thread-standard/tutorial/experimental-manual/experimental-manual.pdf
index 179a84de3ae05680cac69bffceed3ff9b124f7eb..87069261671a0ff318096df4304951649bd32f8d 100644
Binary files a/rt-thread-version/rt-thread-standard/tutorial/experimental-manual/experimental-manual.pdf and b/rt-thread-version/rt-thread-standard/tutorial/experimental-manual/experimental-manual.pdf differ