Dry seedlings get rain: dying seedlings get rain on the ground. To get help in a crisis. Examples of idioms: Good brothers are lucky to come here to guard the fortress, just like "icing on the cake, dry seedlings get rain." (The 50th time of Shi Naian's Water Margin in Ming Dynasty) as the object; To get help in a crisis. Or a metaphor for the joy and joy of getting help.
The moral of your lottery is that what you want will be helped by others and the difficulties will be solved.