Write historical novels and denounce the Kuomintang's traitorous policy; Together with Lu Xun and others, he published the Declaration on Freedom of Speech and Freedom of Speech in the Unity of Literary and Art Circles. Adhere to national salvation activities; Join the War of Resistance against Japanese Aggression Association of China Literary and Art Circles; Refused to be bought by traitors and Japanese spies.

(2) (1) "The old headmaster was in tears", which highlighted his old age, pain and sadness; (2) "Mr. Zheng's eyes are full of tears", which shows that he is very sad inside, but he still insists on giving classes to students and refrains from his sadness; (3) "Usually naughty students ... tears in their eyes", "naughty students" must be boys. They feel sad because of Mr. Zheng's "last lesson", and their chests are full of hatred for the invaders, so they "have tears in their eyes"; (4) "Only a few girls are sobbing in a low voice". After class, they couldn't study in class any more. The girls couldn't help it and finally burst into tears.

3. Although it is the last lesson, it has more special significance than other lessons, so Mr. Zheng "straightened up and made a gesture of standing at attention". This is not only a serious attitude towards the last lesson, but also the indomitable spirit of China people.