When someone describes the math taught in Singapore schools as being too difficult to understand, or complains that young students are unhealthily exposed to an obscene number of brain-unfriendly math questions—“cheem” means “deep” in the Chinese dialect Hokkien.
Ahmad who could hardly understand Mr. Goon’s lessons told his parents: “Singapore math, so cheem. I gave up!”
by MathPlus May 15, 2021