What's the difference between the nine songs in the north and the nine songs in the south?

Due to China's vast territory, the distance between north and south is nearly 5500 kilometers, and the latitude is about 50 degrees, the solar altitude angle is very different and the climate changes greatly. So although they are all "counting nine songs", the lyrics of the north and the south are slightly different.

South China's "Counting Nine Songs": 1929 did not shoot, walked on the river in 3949, the river froze in 5969, watched the willows in 7989, and added 19 in 99, plowing cattle everywhere.

The northern "number nine songs": the winter solstice falls on September 19, with hands hidden in the cuffs; 29 18, my mouth seems to be spicy; 3927, see fire as honey; 4936, go skating; Joan Hinton five, nine, four, five, forty-five; 69 plus 79, don't throw away your cotton-padded clothes; 1989, I began to cultivate land.