What do you mean by departure and delivery?

Your question is difficult to answer, because it is related to the four-pillar numerology knowledge. Only roughly explained as follows:

The so-called "luck" is the specific age when life begins to have a good luck after complicated calculations in numerology. For example, from the age of 3 to the age of 7, and so on, a director of the Universiade can live for ten years, which can be good or bad. Fortunately, life can make up for the lack of eight characters, and this decade is auspicious and smooth; On the contrary, it is unlucky!

The so-called "delivery". We have known a Universiade for ten years. Then, from the end of the last Universiade to the next Universiade, we call it "good luck" or "handing it over to the next Universiade", and its font surface does not mean good or bad luck. As for good or ill luck, it must be judged according to the combination of eight characters and Universiade.

The word "luck" here is luck, not good luck. Luck is mixed.