In China, writing brushes, ink sticks, paper and ink stones are called the Four Treasures of Study.
在中国，毛笔、墨、纸和砚台被称为文房四宝。
After artificial ink-sticks appeared in Han, pestle gradually disappeared.
在汉代出现了人工墨之后，杵逐渐消失。
Since the Han Dynasty (206 BC - 220), ink sticks have been made from pine soot, using other procedures that include mixing with glue, steaming and molding.
自汉代(公元前206- 220)，墨已经从松烟，使用其他程序，包括拌胶，蒸成型。
Remaking ink sticks referred to some old and broken ink sticks were destroyed and remade the new ink sticks and replicated the old ink sticks.
再和时将较多的旧墨、破墨捣毁，制成新墨，还对个别旧墨进行复制。
Category II: liquid ink in pens and similar materials in liquid form appearing as such in the toy (e. g. glue sticks, slimes, bubble solution).
II类材料：在玩具上呈固态或液态的类似材料(例如胶水、粘液、泡泡水)。
Category II: liquid ink in pens and similar materials in liquid form appearing as such in the toy (e. g. glue sticks, slimes, bubble solution).
II类材料：在玩具上呈固态或液态的类似材料(例如胶水、粘液、泡泡水)。
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