put this file to 010 Editor

and we'll see it's a text format

```
binwalk -e diagram
DECIMAL HEXADECIMAL DESCRIPTION
--------------------------------------------------------------------------------
8676 0x21E4 Unix path: /schemas.microsoft.com/office/word/2003/wordml}}
```

it's a microsoft document?

back to 010

lots of hex string and put them to a new hex file

and it's a normal png file

stegsolve this file and nothing to get

abandon

put the rest of string into a new hex file

and binwalk it

wow~a lots of .xml file!

watch all of this by excel

we get a file
```
.\Untitled1.s.extracted\xl\charts\chart1.xml
```

there got many of SECT marks

and go right

there are some numbers like ascii

83 69 67 84 123 52 110 100 114 48 105 100 115 95 115 104 48 117 108 100 95 98 51 95 110 49 99 101 125

translate it one by one

you will get the flag

ps:123 : '{' 125:'}'

remember it and you will happy more