Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_28138035_6 (mens_singles VARCHAR, womens_doubles VARCHAR)
### Question:
How many times was the womens doubles in china?
### Answer:
SELECT COUNT(mens_singles) FROM table_28138035_6 WHERE womens_doubles = "China"