diff --git a/services/bt_app/app_media_player.cpp b/services/bt_app/app_media_player.cpp
index 717a1e7..52256a6 100644
--- a/services/bt_app/app_media_player.cpp
+++ b/services/bt_app/app_media_player.cpp
@@ -43,7 +43,6 @@
 #include "audio_prompt_sbc.h"
 #include "besbt.h"
 #include "res_audio_data.h"
-#include "res_audio_data_cn.h"
 #include "res_audio_ring.h"
 #include "resources.h"
 
diff --git a/services/bt_app/res_audio_data_cn.h b/services/bt_app/res_audio_data_cn.h
deleted file mode 100644
index bb6d5e3..0000000
--- a/services/bt_app/res_audio_data_cn.h
+++ /dev/null
@@ -1,151 +0,0 @@
-/***************************************************************************
- *
- * Copyright 2015-2019 BES.
- * All rights reserved. All unpublished rights reserved.
- *
- * No part of this work may be used or reproduced in any form or by any
- * means, or stored in a database or retrieval system, without prior written
- * permission of BES.
- *
- * Use of this work is governed by a license granted by BES.
- * This work contains confidential and proprietary information of
- * BES. which is protected by copyright, trade secret,
- * trademark and other intellectual property rights.
- *
- ****************************************************************************/
-
-extern const uint8_t CN_SOUND_POWER_ON [];
-
-extern const uint8_t CN_SOUND_POWER_OFF [];
-
-extern const uint8_t CN_SOUND_ZERO[];
-
-extern const uint8_t CN_SOUND_ONE[];
-
-extern const uint8_t CN_SOUND_TWO[];
-
-extern const uint8_t CN_SOUND_THREE[];
-
-extern const uint8_t CN_SOUND_FOUR[];
-
-extern const uint8_t CN_SOUND_FIVE[];
-
-extern const uint8_t CN_SOUND_SIX[];
-
-extern const uint8_t CN_SOUND_SEVEN[];
-
-extern const uint8_t CN_SOUND_EIGHT[];
-
-extern const uint8_t CN_SOUND_NINE[];
-
-extern const uint8_t CN_SOUND_PAIR_ENABLE[];
-
-extern const uint8_t CN_SOUND_PAIRING [];
-
-extern const uint8_t CN_SOUND_PAIRING_FAIL[];
-
-extern const uint8_t CN_SOUND_PAIRING_SUCCESS[];
-
-extern const uint8_t CN_SOUND_REFUSE[];
-
-extern const uint8_t CN_SOUND_OVER[];
-
-extern const uint8_t CN_SOUND_ANSWER[];
-
-extern const uint8_t CN_SOUND_HUNG_UP[];
-
-extern const uint8_t CN_SOUND_INCOMING_CALL [];
-
-extern const uint8_t CN_SOUND_CONNECTED [];
-
-extern const uint8_t CN_SOUND_DIS_CONNECT [];
-
-extern const uint8_t CN_SOUND_CHARGE_PLEASE[] ;
-
-extern const uint8_t CN_SOUND_CHARGE_FINISH[];
-
-extern const uint8_t CN_SOUND_LANGUAGE_SWITCH[];
-
-extern const uint8_t CN_SOUND_WARNING[];
-
-extern const uint8_t CN_SOUND_ALEXA_START[];
-
-extern const uint8_t CN_SOUND_ALEXA_STOP[];
-
-extern const uint8_t CN_SOUND_GSOUND_MIC_OPEN[];
-
-extern const uint8_t CN_SOUND_GSOUND_MIC_CLOSE[];
-
-extern const uint8_t CN_SOUND_GSOUND_NC[];
-
-
-extern unsigned int CN_SOUND_POWER_ON_len;
-
-extern unsigned int CN_SOUND_POWER_OFF_len;
-
-extern unsigned int CN_SOUND_ZERO_len;
-
-extern unsigned int CN_SOUND_ONE_len;
-
-extern unsigned int CN_SOUND_TWO_len;
-
-extern unsigned int CN_SOUND_THREE_len;
-
-extern unsigned int CN_SOUND_FOUR_len;
-
-extern unsigned int CN_SOUND_FIVE_len;
-
-extern unsigned int CN_SOUND_SIX_len;
-
-extern unsigned int CN_SOUND_SEVEN_len;
-
-extern unsigned int CN_SOUND_EIGHT_len;
-
-extern unsigned int CN_SOUND_NINE_len;
-
-extern unsigned int CN_SOUND_PAIR_ENABLE_len;
-
-extern unsigned int CN_SOUND_PAIRING_len;
-
-extern unsigned int CN_SOUND_PAIRING_FAIL_len;
-
-extern unsigned int CN_SOUND_PAIRING_SUCCESS_len;
-
-extern unsigned int CN_SOUND_REFUSE_len;
-
-extern unsigned int CN_SOUND_OVER_len;
-
-extern unsigned int CN_SOUND_ANSWER_len;
-
-extern unsigned int CN_SOUND_HUNG_UP_len;
-
-extern unsigned int CN_SOUND_INCOMING_CALL_len;
-
-extern unsigned int CN_SOUND_CONNECTED_len;
-
-extern unsigned int CN_SOUND_DIS_CONNECT_len;
-
-extern unsigned int CN_SOUND_CHARGE_PLEASE_len ;
-
-extern unsigned int CN_SOUND_CHARGE_FINISH_len;
-
-extern unsigned int CN_SOUND_LANGUAGE_SWITCH_len;
-
-extern unsigned int CN_SOUND_WARNING_len;
-
-extern unsigned int CN_SOUND_ALEXA_START_len;
-
-extern unsigned int CN_SOUND_ALEXA_STOP_len;
-
-extern unsigned int CN_SOUND_GSOUND_MIC_OPEN_len;
-
-extern unsigned int CN_SOUND_GSOUND_MIC_CLOSE_len;
-
-extern unsigned int CN_SOUND_GSOUND_NC_len;
-
-
-#ifdef __INTERACTION__
-extern const uint8_t CN_SOUND_FINDME[];
-extern unsigned int CN_SOUND_FINDME_len;
-};
-#endif