One after one, short-form videos play. The temptation seems never-ending.

Ms. D is a first-year university student, studying a medical subject. She never skips class. She gives her focus in class. A week before the exam, she would study intensively with all her effort. However, during the first-semester exam, facing the many questions in the exam, she couldn’t write down anything she had learned.

Ms. B has always been careful about her diet. She does not stay up late. And she has her health and teeth checked every year. Although over 70 years old, she still looks good.

The phone rang. A: “Hey, what’s up?” B: “Can you hear me?” A: “Yep.” B: “I just bought a new Bluetooth wireless headphone. Is my voice clear? ?” A: “It’s very clear.” B: “Great. Thanks.”