What is the density of 昌黎县?
CREATE TABLE table_name_34 (density___km²_ VARCHAR, hanzi VARCHAR)
SELECT density___km²_ FROM table_name_34 WHERE hanzi = "昌黎县"
### Context: CREATE TABLE table_name_34 (density___km²_ VARCHAR, hanzi VARCHAR) ### Question: What is the density of 昌黎县? ### Answer: SELECT density___km²_ FROM table_name_34 WHERE hanzi = "昌黎县"