CREATE TABLE table_30307 ("Year Location" TEXT, "Mens Singles" TEXT, "Womens Singles" TEXT, "Mens Doubles" TEXT, "Womens Doubles" TEXT)

How many womens singles entries are there when womens doubles is li xiaodan wen jia?
SELECT COUNT("Womens Singles") FROM table_30307 WHERE "Womens Doubles" = 'Li Xiaodan Wen Jia'
SELECT COUNT("Womens Singles") FROM "table_30307" WHERE "Womens Doubles" = 'Li Xiaodan Wen Jia'