soup – tuhng
Written as tāng or tang
To remember that soup is pronounced tuhng (tang) in Mandarin Chinese, use the following mnemonic:
The soup was so hot that it burnt my tongue (tuhng).

Tones
Tuhng (tongue) is a 1st tone with — as an accent.
Associate the word tongue, a 1st tone, with a string or tie or tying or knot. See Tones and Mnemonics.

The string was wrapped around my tongue.
Remember
Tuhng = 1st tone = —