diff --git a/vendor/lockzhiner/rk2206/samples/b4_lcd/include/lcd_font.h b/vendor/lockzhiner/rk2206/samples/b4_lcd/include/lcd_font.h
index f9a9c8355d214cbc65e359385ddcc4e1084f39fd..5b94aeb5ca71c60db21e6537fbe79b437fba15ed 100755
--- a/vendor/lockzhiner/rk2206/samples/b4_lcd/include/lcd_font.h
+++ b/vendor/lockzhiner/rk2206/samples/b4_lcd/include/lcd_font.h
@@ -25,7 +25,8 @@ static inline uint32_t chinese_utf8_to_ascii(uint8_t *src, uint32_t src_len, uin
     {
         dst[offset] = src[i];
         dst[offset + 1] = src[i+1];
-        offset += 2;
+        dst[offset + 2] = src[i+2];
+        offset += 3;
     }
 
     *dst_len = offset;
@@ -439,7 +440,7 @@ const unsigned char ascii_3216[][64] =
 /* 定义中文字符 12*12 */
 typedef struct
 {
-    unsigned char Index[2];
+    unsigned char Index[3];
     unsigned char Msk[24];
 } typFNT_GB12;
 
@@ -459,7 +460,7 @@ const typFNT_GB12 tfont12[] =
 /* 定义中文字符 16*16 */
 typedef struct
 {
-    unsigned char Index[2];
+    unsigned char Index[3];
     unsigned char Msk[32];
 } typFNT_GB16;
 
@@ -480,7 +481,7 @@ const typFNT_GB16 tfont16[] =
 /* 定义中文字符 24*24 */
 typedef struct
 {
-    unsigned char Index[2];
+    unsigned char Index[3];
     unsigned char Msk[72];
 } typFNT_GB24;
 
@@ -510,7 +511,7 @@ const typFNT_GB24 tfont24[] =
 /* 定义中文字符 32*32 */
 typedef struct
 {
-    unsigned char Index[2];
+    unsigned char Index[3];
     unsigned char Msk[128];
 } typFNT_GB32;
 
diff --git a/vendor/lockzhiner/rk2206/samples/b4_lcd/src/lcd.c b/vendor/lockzhiner/rk2206/samples/b4_lcd/src/lcd.c
index 383524a65b00fc399d1b0ebacfd8ea2f51ea5374..7a4df0b168fdbd193a5a3fda522d409c9a737a4d 100755
--- a/vendor/lockzhiner/rk2206/samples/b4_lcd/src/lcd.c
+++ b/vendor/lockzhiner/rk2206/samples/b4_lcd/src/lcd.c
@@ -160,7 +160,7 @@ static void lcd_show_chinese_12x12(uint16_t x, uint16_t y, uint8_t *s, uint16_t
 
     for (k = 0; k < HZnum; k++) 
     {
-        if ((tfont12[k].Index[0] == *(s)) && (tfont12[k].Index[1] == *(s+1)))
+        if ((tfont12[k].Index[0] == *(s)) && (tfont12[k].Index[1] == *(s+1)) && (tfont12[k].Index[1] == *(s+2)))
         {
             lcd_address_set(x, y, x+sizey-1, y+sizey-1);
             for (i = 0; i < TypefaceNum; i++)
@@ -236,7 +236,7 @@ static void lcd_show_chinese_16x16(uint16_t x, uint16_t y, uint8_t *s, uint16_t
     
     for (k = 0; k < HZnum; k++) 
     {
-        if ((tfont16[k].Index[0] == *(s)) && (tfont16[k].Index[1] == *(s+1)))
+        if ((tfont16[k].Index[0] == *(s)) && (tfont16[k].Index[1] == *(s+1)) && (tfont16[k].Index[1] == *(s+2)))
         {
             lcd_address_set(x, y, x+sizey-1, y+sizey-1);
             for (i = 0; i < TypefaceNum; i++)
@@ -313,7 +313,7 @@ static void lcd_show_chinese_24x24(uint16_t x, uint16_t y, uint8_t *s, uint16_t
     
     for (k = 0; k < HZnum; k++) 
     {
-        if ((tfont24[k].Index[0] == *(s)) && (tfont24[k].Index[1] == *(s+1)))
+        if ((tfont24[k].Index[0] == *(s)) && (tfont24[k].Index[1] == *(s+1)) && (tfont24[k].Index[1] == *(s+2)))
         {
             lcd_address_set(x, y, x+sizey-1, y+sizey-1);
             for (i = 0; i < TypefaceNum; i++)
@@ -390,7 +390,7 @@ static void lcd_show_chinese_32x32(uint16_t x, uint16_t y, uint8_t *s, uint16_t
     
     for (k = 0; k < HZnum; k++)
     {
-        if ((tfont32[k].Index[0] == *(s)) && (tfont32[k].Index[1] == *(s+1)))
+        if ((tfont32[k].Index[0] == *(s)) && (tfont32[k].Index[1] == *(s+1)) && (tfont32[k].Index[1] == *(s+2)))
         {
             lcd_address_set(x, y, x+sizey-1, y+sizey-1);
             for (i = 0; i < TypefaceNum; i++)