jiè mǔ
1. Large shellfish.
2. Another name for the Chinese phonetic symbols Yi, Wu and Ji. There are two uses for it: as an independent vowel, spelled after the sound symbol; as a consonant, spelled before some rhymes, indicating the three sounds of teeth, mouth, and mouth. Because it also serves as a sound symbol, it is named Jiemu. Later, due to its practical application, it was combined with other rhymes to form a combined rhyme, which should be classified as a rhyme, and the name Jiemu was no longer used. The initial consonant and the medial consonant i u v are pronounced as a whole in Chinese Pinyin. The sound-introducing consonant is read together with other finals, which is called the pinyin method of sound-introducing consonant. For example: zhu is the consonant of the sound Jie, and when put together with ang, it is zhuang "zhuang".
There are twenty-nine tone-introduction conjugates in Mandarin in my country: bi pi mi di ti ni li ji qi xi du tu nu lu gu ku hu zhu chu shu ru zu cu su lv nv jv qv xv