Yoshikawa created four paintings to represent The Four Symbols around the foyer inside the hospital. The symbols are four mythological creatures appearing among the Chinese constellations along the ecliptic and viewed as the guardians of the four cardinal directions.

They are the Azure Dragon of the East, the Vermilion Bird of the South, the White Tiger of the West, and the Black Tortoise (also called "Black Warrior") of the North.

Each abstract painting has its own guardians hidden inside the natural landscape.

Mountain - Tozainanboku, 2010
Four permanent large-scale foyer paintings
(“Nanboku” means north-south and “Tozai” means east-west in Japanese)

Commissioned by Fukui Kosei Hospital in Fukui, Japan.

Mountain of North
Acrylic on canvas
500 cm x 100 cm

Mountain of South
Acrylic on canvas
500 cm x 100 cm

Mountain of West
Acrylic on canvas
300 cm x 100 cm

Mountain of East
Acrylic on canvas
300 cm x 100 cm