PREVIEW
... n busied herself, while little Qingyu followed along excitedly, playing together. They crushed charcoal and carefully poured the solution into a glass pot, asking endless questions.
"Mother, what is activated carbon?"
"Mother, is our water delicious because we put activated carbon in it?"
"Mother, how long do we have to wait until it’s ready?"
Lin Wanwan answered all her questions one by one, but little Qingyu was just like the courtyard full of servants, probably ...
YOU MAY ALSO LIKE


























