one; the number 1; single; alone

(bound form) side; aspect; part. Common in older literature and theater, as in 这厢 zhè​xiāng (this side) or 两厢情愿 liǎng​xiāng​qíng​yuàn (both sides are willing)

to be willing from the bottom of one's heart; a state of being willing or doing something of one's own accord