Writing System: Hakka can be written using Chinese characters (Hanzi), typically with Mandarin pronunciation, or in the Hakka Romanization systems such as Pha̍k-fa-sṳ (八方字) or Hailu Hakka Romanization.
Grammar: Hakka grammar shares many features with other Chinese languages, including isolating morphology (no inflections for tense, gender, or number), subject-verb-object (SVO) word order, and use of classifiers.
Phonology: Hakka phonology varies by dialect but generally includes a rich inventory of consonants and vowels. Tones play a crucial role in distinguishing meaning, with most dialects having 6 to 9 tones.
Lexicon: The Hakka lexicon includes vocabulary derived from Old Chinese but also exhibits influence from the regions where Hakka speakers have historically lived, such as loanwords from local languages.