Japanese ART Museum in Los Angeles

Hey, guys !

I visited Los Angeles County Museum of Art this weekend, spending most of the time
in Japanese Art Museum. Basically, this museum was built based upon Japanese architecture.
Most of the Japanese paintings were created starting from approximately 3000 B.C. through the 20th century. Frankly, for a person who is not interested in Japanese Art, it might seem confusing. But, when you enter, the paintings start from modern style progressing to old sophisticated ones.
Since japanese art is very unique, I spent at least 5 minutes staring at each painting trying to understand and guess its meaning. Regardless, the most interesting part is when you enter empty room, and it is absolutely empty without any stuff inside, just a cubic room with white painted walls. That's it !!!
I wonder what they meant by that...