[{"_id":"1","people_list":[{"gender":"female","age":20,"adult":true,"hobby":"soccer"},{"gender":"female","age":20,"adult":true,"hobby":"football"},{"gender":"female","age":20,"adult":true,"hobby":"basketball"}]},{"_id":2,"people_list":[{"gender":"female","age":20,"adult":false,"hobby":"soccer"},{"gender":"male","age":20,"adult":true,"hobby":"football"},{"gender":"male","age":20,"adult":true,"hobby":"basketball"},]}]

db.collection.aggregate([{$match:{$expr:{$allElementsTrue:{$map:{input:"$people_list",as:"ppl",in:{$and:[{"$eq":["$$ppl.adult",true],"$eq":["$$ppl.age",20]}]}}}}}}])//db.collection.aggregate([//{//$project:{//see:{//$map:{//input:"$people_list",//as:"ppl",//in:{//$and:[//{//"$eq":[//"$$ppl.adult",//false//],//"$eq":[//"$$ppl.age",//20//]//}//]//}//}//}//}//}//])