diff --git a/APP_Framework/Applications/knowing_app/cmsis_5_demo/cmsisnn-cifar10/demo/readme.md b/APP_Framework/Applications/knowing_app/cmsis_5_demo/cmsisnn-cifar10/demo/readme.md
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+# ISSUE
+
+Code in Lib `tjpgd` might be redefined in RT-thread(which has not been tested). if occurs, please try to temporarily delete `tjpgd.c` in dir and `tjpgd.h` in ../model/m4/.