How to loop deeply nested array object in javascript [duplicate]

haveing the below array object how can i extract the chinese character part from the array

[[["男士牛仔裤","men jeans",null,null,3,null,null,[[]],[[["6ffafab0da7e640be86ac09d0d5e539c","en_zh_2023q1.md"]]]]],null,"en",null,null,null,null,[]]