Heqing, Dali, Yunnan, from 1998 to now, the year of heavy snow.

what you want to ask is when was the heavy snow in Heqing, Dali, Yunnan in 1998? Gregorian calendar December 7, 1998.

the solar term of heavy snow in 1998 is December 7, 1998 (October 19, the fifth lunar year) in Gregorian calendar.

Heavy Snow, when the sun reaches 255 degrees on the day of the Yellow Meridian, marks the official start of the mid-winter season. "twenty-four solar term" said: "Heavy snow, November Festival, so far and snow is also abundant." Heavy snow means that the weather is colder, and the possibility of snowfall is greater than that of light snow. It does not mean that the amount of snowfall must be great.