| HTML Entity (dec) | 老 |
| HTML Entity (hex) | 老 |
| UTF-8 (hex) | 0xe88081 / 0xe8 0x80 0x81 (3 bytes) |
| UTF-8 (dec) | 232, 128, 129 (3 bytes) |
| UTF-16-BE (hex) | 0x8001 / 0x80 0x01 (2 bytes) |
| UTF-16-BE (dec) | 128, 1 (2 bytes) |
| UTF-32-BE (hex) | 0x8001 / 0x00 0x00 0x80 0x01 (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 128, 1 (4 bytes) |
| C/C++/Java source code | "\u8001" |
| Python source code | "\u8001" |