What is the point of the ending scene in In The Mood For Love?

First of all, the movie was incredibly difficult for me to follow. Contrary to the way Wong Kar wai directed 2046, which was just as confusing in places but always backed up by narration, In The Mood For Love is pure dialogue.

I had to watch it about 10 times before I really followed what was going on and the ending still makes me go, WHAT?

CAMBODIA, 1966

The presidential corps waits at Pochentong Airport. Prince Norodom
Sihanouk and Queen Sisowath Kossamak come forward to greet General De
Gaulle.

It's ten kilometers from Pochentong to Phnom Penh.

200,000 people line the route.

A welcome unprecedented in the history of the kingdom.

He remembers those vanished years.

As though looking through a dusty window pane, the past is something
he could see, but not touch.

And everything he sees is blurred and indistinct.

What's the point of all that historical detail about Cambodia? Is there a point?