CREATE TABLE table_42575 ("Hangul" CLOB, "Hanja" CLOB, "Revised" CLOB, "McCune-Reischauer" CLOB, "2000 n South Korea population *" FLOAT)

What is the Hanja for McCune-Reischauer of ch n?
SELECT "Hanja" FROM table_42575 WHERE "McCune-Reischauer" = 'chŏn'
SELECT "Hanja" FROM "table_42575" WHERE "McCune-Reischauer" = 'chŏn'