Witty friend, ask for the detailed method of this problem, thank you.

Spring has arrived, and the willows have sprouted delicate new buds; Peach blossoms are also scrambling to open, Xiaohong is playing alone in the yard, and Xiaohua Mall is sleeping under the willow tree.

There is a swallow's nest on the board under the eaves of Xiaohong's house. Mother Yan went out for food, and only the little swallow and its three brothers and sisters were playing games. Just then, a little swallow accidentally fell out of the nest. It struggled, spread its wings and wanted to fly, but the swallow unfortunately fell to the ground. Xiaohua Mall, who was sleeping, was awakened. He looked around and saw the swallow lying on the ground and still struggling. Xiaohua Mall licked his lips, landed with his front foot on the ground, his back foot half pedaled, and his beard stood upright, and jumped on his "prey". Seeing this, Xiaohong ran to Xiaoyan's side in lightning speed, picked up a branch and waved it in front of Xiaohua Mall. Xiaohua Mall backed away in fear and ran away.

Xiaohong carefully picked up the swallow and took it to the pillow in her room. Xiaohong examined the swallow's body. Xiaohong gasped and murmured, "Oh, you are really hurt. I'll help you dress the wound, and then you can go home! "

Xiaohong bandaged the swallow's wound, moved the ladder and sent the swallow home.

Xiaohong did a good deed, and the swallow squeaked as if thanking Xiaohong!