Chinese graded reading — curated sources

ChineseGradedReader.com (HSK 1–3) · Fully free: 60+ stories using only each HSK level's vocab, with pinyin and audio.
HSKReading.com (HSK 1–4) · Free HSK-graded reading with pinyin, translation, questions and audio.
Mandarin Bean (HSK 1–6+) · Generous free graded reading with native audio and word lookup.
The Chairman's Bao (HSK 1–6+) · Large, daily, HSK-graded news with audio (thin free tier).
DuChinese (HSK 1–6) · High-quality graded stories with pop-up dictionary (rotating free lessons).