Introduction: this kind of pug “ black heart soil” is found by chance in the most derived raw ore of DiCaoQing HuangLong mountain, containing ink color small sandwich layer which forms the pug finally(so it is called directly “ black heart soil”. After many years’ accumulation, the extraction quantity is extremely small. It is precious and rare. It is the best pug that is worth keeping by many pug players.
Characteristics: After sintering, it turns into russet brown with slightly black. It is one of the most precious raw ore.