Each node cooperates to complete block production and accounting. This is unlike the other consensus mechanisms that compete with each other for benefits reasons. The workload verification consensus mechanism (PoW ) and the next node competes for bookkeeping rights through computational power, resulting in the whole network computing power concentrated in the hands of a few mines, or the nodes in the PoS to obtain more bookkeeping awards by competing for the amount of the holding money.
Details about the system of mining you will read in the section BFT-DPoS Consensus Mechanism http://www.apollon-foundation.org/static/file/Apollon_Whitepaper.pdf