2. She inkstone: She inkstone is produced in Shexian County, Anhui Province, and is one of the four famous inkstones in China. It is characterized by deep color, delicate texture, fast ink output and rich ink color.
3. Yan Tao: Yan Tao is produced in Taohe, Gansu, and is loved by people because of its bright color, delicate texture and quick ink production.
4. Xuanyan: Xuanyan is produced in Xuancheng, Anhui Province and is one of the four famous inkstones in China. It is characterized by deep color, delicate texture, fast ink output and rich ink color.
5. Linqu inkstone: Linqu inkstone is produced in Linqu County, Weifang, Shandong Province, and is one of the four famous inkstones in China. It is characterized by deep color, delicate texture, fast ink output and rich ink color.
6. Longtan inkstone: Longtan inkstone is produced in Longtan Village, Yuchi Township, Nantou County, Taiwan Province Province, and is loved by people for its deep color, delicate texture, quick ink production and rich ink color.
The above inkstones are all good choices for quick ink output, but the specific choice of inkstones needs to be decided according to personal needs and preferences.