This repository is a curated Chinese language learning dataset centered on the HSK (Hanyu Shuiping Kaoshi) proficiency exam, spanning HSK levels 1-9 across both the 2021 and 2025 syllabus revisions, plus BCT (Business Chinese) and YCT (Youth Chinese) word lists. The core deliverable is a large collection of structured flat files: per-level word lists with traditional/simplified characters, pinyin, English glosses, and part-of-speech tags; hanzi and handwriting character lists; grammar point JSON files; frequency-ranked lists merged from the SUBTLEX and blog/lit/news/weibo corpora; zhuyin (bopomofo) transliterations; ~5000 downloadable MP3 audio files; and Anki-flashcard-format TSV exports. A handful of Python scripts and one Jupyter notebook in 'Scripts and data/' perform the underlying ETL: OCR cleanup, pinyin correction, duplicate detection, frequency merging, and conversion to XLSX. Although technically a data repository, it has a lightweight application/pipeline component in these maintenance scripts, making it a hybrid with a dominant data character.