Princess September kept her window open day and night.
(i) How did it help the bird?
(ii) How did it help the Princess herself?
(i) The open windows gave the bird freedom to fly in and out of September's room. He arrived whenever he wished to see her. The sight of rice fields and lakes helped him to sing better and more sweetly.
(ii) This arrangement benefitted the princess also. She got a regular visitor who entertained her with his songs which make her happy.
Secondly, she gets fresh air which enhanced her beauty. She grew so beautiful that she became the queen of Cambodia.