CREATE TABLE table_30300 ("Year Location" TEXT, "Mens Singles" TEXT, "Womens Singles" TEXT, "Mens Doubles" TEXT, "Womens Doubles" TEXT)

Who won the mens doubles when wu yang won the womens singles?
SELECT "Mens Doubles" FROM table_30300 WHERE "Womens Singles" = 'Wu Yang'
SELECT "Mens Doubles" FROM "table_30300" WHERE "Womens Singles" = 'Wu Yang'