Of course, paper books are better, collectible and academic ~ but be careful not to read them under strong light and direct light ~ E-books will radiate with the current, and the light intensity or weak light on the screen cannot represent the essential damage. Some people may say that stronger brightness will do more harm to the eyes, but it is not. E-books run on electricity. If there is electricity, there will be radiation, which is likely to hurt the eyes. Weak light can't change anything, electricity is still working, radiation is still hurting your eyes, and weak dimming is only a temporary solution, not a permanent cure. If you want to read e-books, you don't need to buy any anti-blue glasses (blue light is also a kind of eye-hurting light, which usually appears on TV and mobile phones) because the anti-blue glasses were broken in Mango TV's "Seeking Truth from News" ~