Shen Qianqian slightly understood Li Tong's action of drinking water and nodded, "Yes."
"So, her skin tone isn't a normal yellow, but a mottled yellow, not something that was formed by exposure to the sun," Lin Chuan said.
"What does this have to do with her being undercover?"
Shen Qianqian was a bit eager, very keen to know how Lin Chuan figured out that Li Tong had been undercover.
"This is a matter of experience," Lin Chuan chuckled lightly, speaking in a leisurely manner, "If you knew about the manufacturing process of addictive drugs, you would know that Drug No.2 requires a key chemical component."
"What is it?"
Shen Qianqian widened her eyes, asking with an inquisitive tone.
"Sodium nitrite," Lin Chuan stated directly, "It's a strong oxidizer, irritating and corrosive. If the skin comes into direct contact or inhales a high concentration of the gas, it can cause skin irritation, burning eyes, and respiratory irritation."
