I saw that there were not many people commenting on this film, so I came to join in the fun, and my personal opinion is only for your reference.
The film is an illusory story of going back in time, and has entered a series of whimsical ideas, and finally proves the fact that what is lost can never be regained. People you don't care about, things you don't care about, once it happens, it's impossible to think about it later, so he is saying that we should cherish everything around us, we must be sincere to others, and put our care on more people . It all ends by saying cherish the present and love the people you love!
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