她们说谎是为了避免互相担心，但这与片中核心的谎言相比根本算不了什么，那就是奶奶（赵淑珍饰）患了晚期肺癌，家人知道但不肯告诉她。
They 're lying to avoid worrying each other , but that 's nothing compared with the core untruth , that Nai Nai ( Zhao Shuzhen ) has terminal lung cancer , and the family knows but won 't tell her .
赵淑珍