CREATE TABLE table_43598 ("Name" CLOB, "Hanzi" CLOB, "Hanyu Pinyin" CLOB, "Population  ( 2004 est. ) " CLOB, "Area  ( km\\u00b2 ) " CLOB, "Density  ( /km\\u00b2 ) " CLOB)

Which Hanzi has a suburban population in 2004?
SELECT "Hanzi" FROM table_43598 WHERE "Population (2004 est.)" = 'suburban'
SELECT "Hanzi" FROM "table_43598" WHERE "Population (2004 est.)" = 'suburban'