CREATE TABLE table_62704 ("Season" FLOAT, "Winners" TEXT, "Runners-up" TEXT, "Third-place" TEXT, "fourth-placed" TEXT, "Number of clubs" FLOAT)

What is the number of clubs when Dalian Shide won and Sichuan Quanxing won 4th?
SELECT AVG("Number of clubs") FROM table_62704 WHERE "Winners" = 'dalian shide' AND "fourth-placed" = 'sichuan quanxing'
SELECT AVG("Number of clubs") FROM "table_62704" WHERE "Winners" = 'dalian shide' AND "fourth-placed" = 'sichuan quanxing'