CREATE TABLE table_40400 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponent in the final" TEXT, "Score" TEXT)

What was the name of the tournament that the final was played against Yi Jingqian?
SELECT "Tournament" FROM table_40400 WHERE "Opponent in the final" = 'yi jingqian'
SELECT "Tournament" FROM "table_40400" WHERE "Opponent in the final" = 'yi jingqian'