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 city (name VARCHAR, countrycode VARCHAR)
TABLE: CREATE TABLE countrylanguage (countrycode VARCHAR, isofficial VARCHAR, language VARCHAR)
TABLE: CREATE TABLE country (code VARCHAR, continent VARCHAR)

### Question ###
Which unique cities are in Asian countries where Chinese is the official language ?

### Accurate SQL ###

SELECT DISTINCT t3.name FROM country AS t1 JOIN countrylanguage AS t2 ON t1.code = t2.countrycode JOIN city AS t3 ON t1.code = t3.countrycode WHERE t2.isofficial = 't' AND t2.language = 'chinese' AND t1.continent = "asia"