You won’t find these two characters in your HSK list. They’re not used in standard mandarin, but they are used in some dialects.
ๅฌฒ is a very common word in Cantonese.ย cantonese.sheik.co.uk/dictionary/characters/309ย [็ฒต] nau1 – Cantonese only: get angry; take offence; detest [็ฒต] niu5 | [ๅ] niao3 [literary] tease; pester
