CREATE TABLE table_name_30 (population__2010_11_01_ VARCHAR2, hanzi VARCHAR2)

What is the population for the area that has a Hanzi of ?
SELECT population__2010_11_01_ FROM table_name_30 WHERE hanzi = "延寿县"
SELECT "population__2010_11_01_" FROM "table_name_30" WHERE "hanzi" = "延寿县"