CREATE TABLE table_38997 ("Jyutping" TEXT, "Character" TEXT, "Portuguese" TEXT, "Relative value" TEXT, "Metric value" TEXT, "Imperial value" TEXT)

what's the imperial that contains a jyutping of cin4?
SELECT "Imperial value" FROM table_38997 WHERE "Jyutping" = 'cin4'
SELECT "Imperial value" FROM "table_38997" WHERE "Jyutping" = 'cin4'