hái / zi / men / zài / yuàn / zi / lǐ / chuī / féi / zào / shuǐ / pào / pào / wán / de / hěn / kāi / xīn

孩子们在院子里吹肥皂水泡泡，玩得很开心。

The children are blowing soap bubbles in the yard and having a great time.