We have updated our dataset to version **Data_122824**. Please use the most up-to-date version to train your model. What has been changed in this version: 1. Re-annotated unclear images for better training results. 2. Fixed the unmatched JSON and JPG files. 3. Added one more test sample (you may need to use the most up-to-date *Submission_template.csv*). **The data format and evaluation metric remained the same. You don't have to worry about changing your model structure.**