- 心怀鬼胎 xīnhuáiguǐtāi to have ulterior motivesto harbor sinister intentions; to have an evil scheme in mind; to hide a secret that cannot be told
- 各怀鬼胎 gèhuáiguǐtāi to each have their own ulterior motivesUsed to describe a situation where each person in a group has their own hidden agenda or selfish plans rather than working together