CREATE TABLE table_30321 ("Year Location" TEXT, "Mens Singles" TEXT, "Womens Singles" TEXT, "Mens Doubles" TEXT, "Womens Doubles" TEXT)

How many times did li ju win the womens singles and wang liqin win the mens singles?
SELECT COUNT("Womens Doubles") FROM table_30321 WHERE "Womens Singles" = 'Li Ju' AND "Mens Singles" = 'Wang Liqin'
SELECT COUNT("Womens Doubles") FROM "table_30321" WHERE "Mens Singles" = 'Wang Liqin' AND "Womens Singles" = 'Li Ju'