CREATE TABLE table_16489766_2 (urban_population__2010_ VARCHAR, pinyin VARCHAR)

What is the total urban population of the city with the pinyin translation ch ngch n?
SELECT COUNT(urban_population__2010_) FROM table_16489766_2 WHERE pinyin = "Chángchūn"
SELECT COUNT("urban_population__2010_") FROM "table_16489766_2" WHERE "Chángchūn" = "pinyin"