One day, three siblings receive a postcard from their mother who left them a long time ago. But all it says is "I miss you." Three siblings are disconcerted by the sudden contact, but eventually, they go on a trip to meet their mother.　　Credit　　Director这简直是太完美了，陈天豪急迫(pò )的问(wèn )道(⛰)：天花哥，研究(🏞)基础(⏬)测试需要(yào )的仪器吗？