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In the context of carbon neutrality, the BRICS countries, representatives of emerging developing countries, have proposed their own adaptation policies and carbon emission reduction targets (CERT). Here, we sort out the evolution of their climate policies and actions over the past half-century. After piecing together their energy structures and carbon emissions from various sources and by different sectors, we see distinct energy structures diverging over time with increasing varieties of non-fossil energy. However, all the BRICS countries, except for Brazil, still rely heavily on fossil fuels, which poses a real challenge to emission reduction. After considering their diversified energy structures, we estimate their timelines for achieving the carbon neutrality goal using the Greenhouse Gas and Air Pollution Interactions and Synergies (GAINS) model. From the model output, we propose possible solutions to help achieve the carbon neutrality goal with respect to their individual status quo and future needs for socioeconomic development. The suggestions include reinforcing the legislation, strengthening cooperation in the fields of energy and carbon management and in core technologies for carbon emission reduction, improving the cooperation mechanisms of the BRICS countries, and further expanding all-round cooperation. [ABSTRACT FROM AUTHOR]