没有你晴天算什么
[méi yŏu nĭ qíng tiān suàn shén me]
This phrase, meaning 'What is sunny weather without you?', indicates a heavy reliance on someone else. In most cases, the person uses this to show their dependence on their loved ones or their feelings toward significant others who mean so much to them, expressing a sentiment that everything seems less valuable without this particular person.