Luoyang Chengni (deposited silt) Ink-stone, specially processed with silt having been deposited for thousands of years in the Yellow River as raw material, is one of the four top ink-stones of
China. Hard yet
delicate, wearable and jade-like, Chengni Ink-stone is amazing, smooth as the skin of babies, mild even in cold winters, capable of holding water that would not easily dry up. Produced near the bank of the Yellow River in western
Henan, Chengni Ink-stones were tribute to emperors in the Tang (618-907 AD) and Song dynasties (960-1279 AD). Beloved by literati of all dynasties, it was much favored by Su Dongpo, one of the most eminent scholars of China; Mi Fu, one of the greatest calligraphers and painters and Zhu Yuanzhang, the first emperor of the Ming Dynasty (1368-1644AD), as shown by their essays.
On trying it, the Qianlong Emperor of the Qing Dynasty (1616-1911AD) commended much on the
Chengni Ink-tone made of silt of thousands of years and thought it was even superior to Duan Ink-stone (another famous ink stone in China) as far as some unique qualities in ink-writing are concerned.