We have a message with strange chinese characters, but it looks like there is a repeating pattern.

Replaced chinese unicode symbols:

```
AB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEAB_CDEAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEAB_CDEAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEAB_CDEAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEAB_CDEAB_CDEAB_CDEFGH_IJK_LMNAB_CDEAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMNAB_CDEAB_CDEAB_CDEFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNFGH_IJK_LMNAB_CDEFGH_IJK_LMN
```

Note that the space is a part of code (replaced by underscore).

The cipher key (we've tried to replace the pattern little by little A, AB, AB_, ...):
```
AB_CDE = 0
FGH_IJK_LMN = 1
```

Solved cipher:
```
0110011001101100011000010110011101111011001100000111010001110100011001010111001001110011010111110101001001011111010101000110100001100101010111110100001000110011011100110111010001111101
```

184 / 8 = 23 ASCII chars

Decoded ASCII:

`flag{0tters_R_The_B3st}`