The meaning?

What? Must the infantry charge of meaning follow the cannonading of your quatrains, to complete the rout?

Dada

Just one word to make you understand. It means, that if the bamboos were no better than those noisy instruments——

No, Dada, we must not understand.

I defy you to make us understand.

Dada, if you use force to make us understand we shall use force to force ourselves not to understand.

Dada

The gist of the quatrain is this, that if we do no good to the world, then——

Then the world will be very greatly relieved.