If you use word order search, you should find out what a clam is, and then find out what its syllable language is and what its tongue sound is.

If you die, you should look up the phonetic sequence S by the phonetic sequence method, and then look up the syllable sǐ. Its syllables are regarded as a whole.

The initial letter s is flat tongue.

Knowledge point supplement-

Flat tongue sounds include z, c and s sounds.

Tongue sounds include zh, ch, sh and R.