บท 488: Can I Cozy Up To You?

"You are being ignorant. Why would I lie to you? This is very normal. The consumption function of the cow's stomach is not perfect. Many fibers of the grass that enters the stomach can't be completely decomposed, so the feces can be used as fuel after they are dried by the wind or the sun! Read more books when you have nothing to do, kiddo."

As Shen Fei spoke, she glared at Liu Shi gently. However, she did not have any sarcasm. It was just a kind lesson from her senior sister to her junior brother.

This was the first time Liu Shi had heard such knowledge. Although he was scolded softly by Shen Fei, he was not angry. Instead, he nodded obediently, as if he had learned something.