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_62704 ( "Season" real, "Winners" text, "Runners-up" text, "Third-place" text, "fourth-placed" text, "Number of clubs" real )

### Question ###
What is the number of clubs when Dalian Shide won and Sichuan Quanxing won 4th?

### Accurate SQL ###

SELECT AVG("Number of clubs") FROM table_62704 WHERE "Winners" = 'dalian shide' AND "fourth-placed" = 'sichuan quanxing'