As for the conventionally defined zero-onset, the assumption in this thesis is that when the syllable begins with a non-high vowel, the onset position is empty;

关于零声母，本论文的假设：当音节以非高元音起首时，音节首音位置为空；

youdao

As for the conventionally defined zero-onset, the assumption in this thesis is that when the syllable begins with a non-high vowel, the onset position is empty;

关于零声母，本论文的假设：当音节以非高元音起首时，音节首音位置为空；

youdao