Meeting the right person at the right time is a lifetime of happiness; meeting the wrong person at the right time is a heartbreak; meeting the wrong person at the wrong time is an absurdity; meeting the right person at the wrong time is a sigh... Every time I see this old Internet classic, I can't help but feel sad. Is he her destiny? Every time she was desperate, she always thought, what could prove that they had loved each other? If he is willing to deny it, can everything in his life be deleted and treated as if nothing has happened? Everything yesterday seems to be gone without a trace, and the only thing that remains unchanged is the smoky gray sky that occasionally comes true...