What is the relationship between Chongyang and Hanlu?

There is no necessary connection between the two.

Cold dew is the solar term in September. "Twenty-four solar terms" says: "Dew in September will condense", which means that the temperature of this solar term is further reduced, and the dew on the vegetation is not only white, but also very cold, and will soon condense into frost. Astronomically, when the sun reaches 195, it is cold dew. This year's Cold Dew Festival is10.8 (August 26th of the lunar calendar) 65438+22: 43. There is a folk saying that "if you eat cold dew, you will not see a person who is single-clothed". Through the cold dew, all parts of China have entered autumn. The north is the scene of late autumn, with white clouds and red leaves, and the weather is cold; Autumn is getting stronger in the south, and cicadas are dying; Northeast and northwest, the fields are bleak, the first frost is coming, or it has entered the early winter.

Double Ninth Festival refers to the Double Ninth Festival in September. People have activities such as climbing mountains, eating Chongyang cakes and enjoying chrysanthemums in autumn. Generally speaking, the Double Ninth Festival is a few days after the cold dew.