He finally determined that time was his problem--too short a fermentation time, and the color was too dark; too long a time, and it was "too blue" to match the traditional standard.
他把赭石濃漿倒入壇內，再調入適量氧化劑，使赭石細微粒子中的核心達到完全氧化，比原來的粒子要細得多，就能和墨合一使用，終於解決長久以來畫家對赭石與墨分離的困擾。