他的 + 女儿
女儿 (nǚ'ér) is a noun meaning 'daughter.' It combines 女 (female) and 儿 (child). It is the standard term used to refer to one's female child in both spoken and written Chinese.
我女儿今年刚上小学。
Wǒ nǚ'ér jīnnián gāng shàng xiǎoxué.
My daughter just started elementary school this year.
她的女儿长得跟她一模一样。
Tā de nǚ'ér zhǎng de gēn tā yī mó yīyàng.
Her daughter looks exactly like her.
他最大的心愿是看到女儿幸福。
Tā zuìdà de xīnyuàn shì kàndào nǚ'ér xìngfú.
His greatest wish is to see his daughter happy.