He is known as a rice chaser in his social circle.
rice chaser
idiomA white person with a strong inclination and attraction toward Asians.
Origin
disputed originAlluding to the rice-based gastronomy of many Asian cuisines.
Some people criticized his dating history, suggesting he was a rice chaser who only pursued Asian women.
The term rice chaser is often used to describe someone whose romantic preferences are based primarily on racial stereotypes rather than individual connection.