Error querying.... empty query

<?php

$dbc=mysqli_connect('127.0.0.1','root','','tys') or die('nope');

$query = mysql_query("SELECT * FROM tys_post");
 $result = mysqli_query($dbc, $query)
    or die('Error querying database.');

  while ($row = mysqli_fetch_array($result)) {
    echo $row['tys_title'];
  }
mysqli_close($dbc);
?>