diff --git a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/configs/usbnsh/defconfig b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/configs/ch376nsh/defconfig
similarity index 100%
rename from Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/configs/usbnsh/defconfig
rename to Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/configs/ch376nsh/defconfig
diff --git a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/configs/sdnsh/defconfig b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/configs/sdnsh/defconfig
deleted file mode 100644
index 4227c490e..000000000
--- a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/configs/sdnsh/defconfig
+++ /dev/null
@@ -1,63 +0,0 @@
-#
-# This file is autogenerated: PLEASE DO NOT EDIT IT.
-#
-# You can use "make menuconfig" to make any modifications to the installed .config file.
-# You can then do "make savedefconfig" to generate a new defconfig file that includes your
-# modifications.
-#
-# CONFIG_NSH_DISABLE_LOSMART is not set
-# CONFIG_STANDARD_SERIAL is not set
-CONFIG_ADD_NUTTX_FETURES=y
-CONFIG_ARCH="risc-v"
-CONFIG_ARCH_BOARD="xidatong-riscv64"
-CONFIG_ARCH_BOARD_XIDATONG_RISCV64=y
-CONFIG_ARCH_CHIP="k210"
-CONFIG_ARCH_CHIP_K210=y
-CONFIG_ARCH_INTERRUPTSTACK=2048
-CONFIG_ARCH_RISCV=y
-CONFIG_ARCH_STACKDUMP=y
-CONFIG_BINFMT_DISABLE=y
-CONFIG_BOARD_LOOPSPERMSEC=46000
-CONFIG_BUILTIN=y
-CONFIG_DEBUG_FULLOPT=y
-CONFIG_DEBUG_SYMBOLS=y
-CONFIG_EXAMPLES_HELLO=y
-CONFIG_IDLETHREAD_STACKSIZE=2048
-CONFIG_INIT_ENTRYPOINT="nsh_main"
-CONFIG_INIT_STACKSIZE=3072
-CONFIG_INTELHEX_BINARY=y
-CONFIG_LIBC_PERROR_STDOUT=y
-CONFIG_LIBC_STRERROR=y
-CONFIG_NSH_ARCHINIT=y
-CONFIG_NSH_BUILTIN_APPS=y
-CONFIG_NSH_DISABLE_IFUPDOWN=y
-CONFIG_NSH_DISABLE_MKDIR=y
-CONFIG_NSH_DISABLE_RM=y
-CONFIG_NSH_DISABLE_RMDIR=y
-CONFIG_NSH_DISABLE_UMOUNT=y
-CONFIG_NSH_READLINE=y
-CONFIG_NSH_STRERROR=y
-CONFIG_PREALLOC_TIMERS=4
-CONFIG_RAM_SIZE=2097152
-CONFIG_RAM_START=0x80400000
-CONFIG_RAW_BINARY=y
-CONFIG_READLINE_CMD_HISTORY=y
-CONFIG_READLINE_CMD_HISTORY_LEN=100
-CONFIG_READLINE_CMD_HISTORY_LINELEN=120
-CONFIG_RR_INTERVAL=200
-CONFIG_SCHED_WAITPID=y
-CONFIG_STACK_COLORATION=y
-CONFIG_START_DAY=28
-CONFIG_START_MONTH=12
-CONFIG_START_YEAR=2019
-CONFIG_SYSTEM_NSH=y
-CONFIG_TASK_NAME_SIZE=20
-CONFIG_TESTING_GETPRIME=y
-CONFIG_UART0_SERIAL_CONSOLE=y
-CONFIG_READLINE_TABCOMPLETION=y
-CONFIG_SCHED_HPWORK=y
-CONFIG_DEV_GPIO=y
-CONFIG_BOARDCTL_RESET=y
-CONFIG_BSP_USING_CH376=y
-CONFIG_CH376_USB_FUNCTION=y
-CONFIG_CH376_WORK_MODE=0x03
diff --git a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/src/ch376_demo.c b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/src/ch376_demo.c
index f8d439e52..dd3e7b01f 100644
--- a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/src/ch376_demo.c
+++ b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong-riscv64/src/ch376_demo.c
@@ -60,7 +60,7 @@ void CH376Demo(void)
     printf( "CH376FileCreatePath:0x%02x\n",(uint16_t)s );
     
     printf( "Write some data to file\n" );
-    strcpy( (char *)buf, "This is 演示数据\xd\xa" );
+    strcpy( (char *)buf, "This is test case!\xd\xa" );
     s = CH376ByteWrite(buf, strlen((char *)buf), NULL );
     printf( "CH376ByteWrite:0x%02x\n",(uint16_t)s );