If you have been using Google Assistant for some time, you would have notice that there seems to be some changes to Google Assistant.
When activiated through Long Pressing the home button or Active Edge, you can now see that there are flashing Google colours bar at the bottom of the screen.
No changes are made to the way information is displayed though.
Yes, Google Assistant can now understand both Traditional and Simplified Chinese. To activate that, you need to go to settings and change it as the preferred language.