Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_20850 ( "City" text, "Chinese" text, "Pinyin" text, "Province" text, "Urban Population (2010)" real, "Administrative Population (2010)" real )

### Question ###
What is the total urban population of the city with the pinyin translation ch ngch n?

### Accurate SQL ###

SELECT COUNT("Urban Population (2010)") FROM table_20850 WHERE "Pinyin" = 'Chángchūn'