Luo Chengming came home in a terrible state. He took a bath, found a new set of clothes, and replaced the plastic bag around his waist.

Suddenly, his mobile phone rang. He picked up the phone and pressed the answer button. Upon hearing Luo Jin's question, he said impatiently, "Father, leave it to me. You don't need to worry about anything! I will definitely get the formula for you."

Then, he immediately hung up the phone.

Luo Jin looked at the phone ...