localized time format is not correct

I am trying to get the local time based on time zone and language but it is not working

```
dayjs().locale('zh-cn').tz('Asia/Hong_Kong').format("LT")
```

Should print something like this : `02:10` but it prints `2:10 AM` - AM and PM is not used in Hong Kong

In moment this is possible:
http://jsfiddle.net/j0pf89u6/

```
moment.locale('zh-cn');
var now = moment().tz('Asia/Hong_Kong').format("LT")
console.log(now);
// 02:10
```