| HTML Entity (dec) | 唉 |
| HTML Entity (hex) | 唉 |
| UTF-8 (hex) | 0xe59489 / 0xe5 0x94 0x89 (3 bytes) |
| UTF-8 (dec) | 229, 148, 137 (3 bytes) |
| UTF-16-BE (hex) | 0x5509 / 0x55 0x09 (2 bytes) |
| UTF-16-BE (dec) | 85, 9 (2 bytes) |
| UTF-32-BE (hex) | 0x5509 / 0x00 0x00 0x55 0x09 (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 85, 9 (4 bytes) |
| C/C++/Java source code | "\u5509" |
| Python source code | "\u5509" |