What do you mean by making a sound?

The significance of Rene's vocal music

March 26th to 30th is the day when "Lei Nai speaks", and it is also February 22nd to 26th of the lunar calendar.

Yi Zhoushu said, "The mysterious bird has arrived. On the fifth day, Reynet spoke. He said, "If the thunder doesn't speak, the princes will lose their people. ".

Then there was a loud thunder. That is, the cloud activity in the sky began to become active.

The name is not difficult to understand, that is, thunder appeared in the sky at this time.

Twenty-four solar terms say: thunder is sound: thunder is the sound of yang, but it can't get out when it's cloudy, so thunder is exciting. Twenty-four solar terms in Yuan Dynasty said: thunder is sound, yin and yang are thin, and it is thunder. Up to now, the four yang are getting stronger and stronger, and there is still yin, so the sound is thin and the rhyme must say: it is difficult to breathe.