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_name_40 (year INTEGER, mixed_doubles VARCHAR)
### Question:
Which is the earliest year that had mixed doubles for wang wei lu ying?
### Answer:
SELECT MIN(year) FROM table_name_40 WHERE mixed_doubles = "wang wei lu ying"