1, good luck: Good luck in some trivial matters.
2. Unexpected good thing: I got something or a surprise unexpectedly.
3. Hope and optimism: In some cases, it can also express a hopeful and optimistic attitude towards the future.
In daily life, there are sometimes some small lucky moments, such as suddenly receiving a phone call from a friend I haven't seen for a long time, receiving an unexpected gift, or getting help from others in trouble. These moments can be described as small luck, expressing a warm, moving and happy mood.