What does it mean that poets translate poems, use poems to translate poems, use patterns to replace rules, and use Dun to replace Zhu?

Bian Zhilin is a famous translator and poet in my country. Bian Zhilin has made great achievements in the research, creation and translation of poetry, and has made great contributions to the development of colloquial and metrical new poetry in my country. He made a great contribution. His translation proposition of "poets translate poems, translate poems with poems; when translating poems with metres, use rhythm instead of steps" still has a positive guiding role in our poetry translation today. The Shakespeare plays he translated using poetry genres, It has also become a representative work of metrical Shakespeare translations.