CREATE TABLE table_24037 ("Tour" TEXT, "Mens singles" TEXT, "Womens singles" TEXT, "Mens doubles" TEXT, "Womens doubles" TEXT, "Mixed doubles" TEXT)

when mixed doubles is zheng bo ma jin and womens singles is wang yihan, what was the tour?
SELECT "Tour" FROM table_24037 WHERE "Mixed doubles" = 'Zheng Bo Ma Jin' AND "Womens singles" = 'Wang Yihan'
SELECT "Tour" FROM "table_24037" WHERE "Mixed doubles" = 'Zheng Bo Ma Jin' AND "Womens singles" = 'Wang Yihan'