JSFiddle - React, Tailwind, and code Playground
HTML
<div ng-controller="myCtrl">
Below div will show what you wanted to show..
<ul ng-repeat="(key,value) in dataFor">
<li ng-repeat="state in value">{{key +','+ state}}</li>
</ul>
</div>
JavaScript
angular.module('myApp', [])
.controller('myCtrl', function ($scope, $http) {
$scope.dataFor = {"China":["Guangzhou","Fuzhou","Beijing","Sakura","Asahi"],
"Japan":["abc","pqr","xyz"]};
});