Why doesn't CAKEPHP use the model name as the key to return data?

Array
(
    [0] => Array
        (
            [ad_list] => Array
                (
                    [cnum] => 153146853056
                    [rnum] => 24549
                    [endtime] => 
                    [title] => aaaaasdfasasdf
                )

        ) ... ...

is a number increasing from zero

Apr.10,2021
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