F1 Moral education

F2 Plot

F3 Satisfaction of curiosity

F4 Entertainment

F5 Reputation

Mind purification

0.864

Unexpectedness

0.773

Sensitive topics

0.809

Emotional appeal

0.719

Friends’ praise

0.719

Mental harvest

0.822

Fascination

0.754

Truth revelation

0.689

Relaxation

0.709

Social debate

0.683

Inspiration

0.791

Logic

0.725

Information acquisition

0.668

Spiritual enjoyment

0.667

Representative

0.680