弃子

qì zǐqizi

1. sacrificed piece (in chess or Go)
2. abandoned child
3. (fig.) sth that has been abandoned or sacrificed (an ally, a product, employees etc)
4. (in expressions such as 拋家棄子|抛家弃子[pao1 jia1 qi4 zi3]) to abandon one's child(ren)

Study it in Yanamino