What does it mean to look up at the willows in 5969?

: "1929 didn't shoot, walked on the ice in 3949, looked up at the willows in 5969, and the 79 river opened with 89 swallows, and plowed cattle everywhere in 99 and 19". It reflects the five stages of winter solar terms in northern China and the time calculation of winter length.

The winter solstice is the first day of September 19. Spring will begin in 5969.