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_204_671 ( id number, "airing\ndate" text, "english title\n(chinese title)" text, "number of episodes" number, "main cast" text, "theme song (t)\nsub-theme song (st)" text, "genre" text, "notes" text, "official website" text )

### Question ###
which was the longest running ?

### Accurate SQL ###

SELECT "english title\n(chinese title)" FROM table_204_671 ORDER BY "airing\ndate" - "airing\ndate" DESC LIMIT 1