- 背信弃义 bèixìnqìyì to break faithto go back on one's word and abandon principles; to betray a trust; perfidious
- 背信忘义 bèixìnwàngyì to break faith and abandon principlesto break one's word and abandon principles; to be treacherous and forget one's duty
- 黑背信天翁 hēibèixìntiānwēng Laysan albatrossthe Laysan albatross (Phoebastria immutabilis), a bird species found in China
