CREATE TABLE table_15301258_1 (best_supporting_actress VARCHAR, best_supporting_actor VARCHAR)

Name the best supporting actress for sun honglei for mongol
SELECT best_supporting_actress FROM table_15301258_1 WHERE best_supporting_actor = "Sun Honglei for Mongol"
SELECT "best_supporting_actress" FROM "table_15301258_1" WHERE "Sun Honglei for Mongol" = "best_supporting_actor"