zhōng​xiào​bù​néng​liǎng​quán

loyalty and filial piety are incompatible

忠孝不能两全 忠孝不能兩全 zhōng​xiào​bù​néng​liǎng​quán
loyalty and filial piety are incompatible
Literally meaning one cannot satisfy the demands of both loyalty to the state and filial piety to one's parents at the same time; used when a person is forced to choose between duty to their country and duty to their family