CREATE TABLE table_30315 ("Year Location" TEXT, "Mens Singles" TEXT, "Womens Singles" TEXT, "Mens Doubles" TEXT, "Womens Doubles" TEXT)

How many people are shown for mens doubles when guo yue played womens singles?
SELECT COUNT("Mens Doubles") FROM table_30315 WHERE "Womens Singles" = 'Guo Yue'
SELECT COUNT("Mens Doubles") FROM "table_30315" WHERE "Womens Singles" = 'Guo Yue'