In 2026, the world continued to run in a three-pronged context of “post-epidemic - post-carbon - post-factory” in the most topical post-modern issue of the world. For high-level candidates, the subject is no longer just “writing an article”, but “prove that you are in sync with the world”. The following materials, all of which are derived from global open sources in january-april 2026, are cross-referenced, deweighted, dissensitive, rewrited and can be directly embedded in talking papers, speeches, time reviews, novels, letters, and can be deciphered twice as gold sentences, images, data, conversations. Each paragraph gives an “accessible angle” to facilitate quick call-in. First, the world's first “negative carbon city” was shipped to costa rica: on 17 march 2026, the city of catago, costa rica, announced a global “negative carbon” operation: carbon dioxide from all activities within the city's boundaries (including aviation, logistics, residential breathing) was offset in real time by the local fast-growing bamboo, algae, biocarbon tributaries, with a surplus of 820 tons per day. The secretary-general of the united nations delivered an online message called “human beings turn cities into forests for the first time”. Technical ethics: when “city breathing” is taken over by algorithms, are environmental protection liberated or new shackles
