In the course of his experimenting, Li found that the pots were most absorbent at 800 to 1000 oC, so timing was key to getting the best results. As the temperature drops further, the pots don't blacken so well.
根據他的觀察，薰黑效果最重要的溫度點是一千度到八百度之間，胚體吸收最多，隨窯溫持續降低，薰黑效果越差。