Like the farewell for 18 miles of Butterfly lovers in classical Chinese opera, modern couples who reluctant to part when the time to say goodbye, the separation anxiety when the first time parents dropping their child off at school, and St. Mary Magdalen held on to Jesus unwilling to let him go, even in the well-developed Internet era, when facing the separation in life and parting at death, meeting each other seems easy; whereas then came the time to part, it is hard to bid farewell. This paper generalizes three types of situation by awareness and state of mind: (1) the night (fear of loneliness), (2) "jīn" (矜, holding back tears), and (3) the deep pain (fear of being alone). This paper gives insight into three types of memory: (1) fear of nihility, (2) in whom do you trust, and (3) the fragile. Also, this paper discusses the renewal process of reviving the bygones: (1) containment (reluctant to part), (2) harmonization (knowing the unknown), and (3) acceptance (psychic conversion). The conclusion: farewell is the beginning of reunion, and people can bid farewell to one another by reviving the bygones.