2. Solar halos mostly appear in spring and summer. There is a folk proverb, "It rains in the middle of the night and it is windy in the middle of the month", which means that if there is a solar halo, it will rain in the middle of the night, and if there is a lunar halo, it will be windy at noon the next day. To some extent, solar halo can be a precursor of weather change, and it may turn cloudy or rain, but there is no scientific basis to say that this phenomenon can predict the drought and flood of climate, and it is nonsense to say that solar halo predicts war in ancient times, so it is not true that solar halo is one of the top ten ominous phenomena.