diff --git a/README.md b/README.md
index 2e0f2f0..e26fcb4 100644
--- a/README.md
+++ b/README.md
@@ -76,8 +76,14 @@ Download [avia_indoor_quick_shake_example1](https://drive.google.com/file/d/1SWm
 roslaunch fast_lio mapping_avia.launch
 rosbag play YOUR_DOWNLOADED.bag
 ```
+### 4.2 High-rate rosbag (Livox Avia LiDAR with 100Hz frame-rate)
 
-### 4.2 Outdoor rosbag (Livox Avia LiDAR)
+Download [high_rate_avia](https://drive.google.com/file/d/1UM6O3PRN3b730ZeuvKKT3yuOLNQuz8Yf/view?usp=sharing) and then
+```
+roslaunch fast_lio mapping_avia.launch
+rosbag play YOUR_DOWNLOADED.bag
+```
+### 4.3 Outdoor rosbag (Livox Avia LiDAR)
 
 <div align="center"><img src="doc/results/HKU_MB_002.png" width=100% /></div>
 
@@ -89,13 +95,5 @@ roslaunch fast_lio mapping_avia_outdoor.launch
 rosbag play YOUR_DOWNLOADED.bag
 ```
 
-### 4.3 High-rate rosbag (Livox Avia LiDAR with 100Hz frame-rate)
-
-Download [high_rate_avia](https://drive.google.com/file/d/1UM6O3PRN3b730ZeuvKKT3yuOLNQuz8Yf/view?usp=sharing) and then
-```
-roslaunch fast_lio mapping_avia.launch
-rosbag play YOUR_DOWNLOADED.bag
-```
-
 ## 5.Acknowledgments
 Thanks for LOAM(J. Zhang and S. Singh. LOAM: Lidar Odometry and Mapping in Real-time), [Livox_Mapping](https://github.com/Livox-SDK/livox_mapping) and [Loam_Livox](https://github.com/hku-mars/loam_livox).