Was it artificial snow or natural snow when it snowed in Linyi yesterday?

Due to the difference between meteorological conditions and sky growth environment, snowfall has caused all kinds of atmospheric solid precipitation. The names of these atmospheric solid precipitation vary from place to place, from person to person, varied and extremely inconsistent.

For convenience, the International Ice and Snow Committee under the International Hydrological Association held a special international conference in 1949 on the basis of consulting experts from various countries, at which the proposal of "Concise Classification of Atmospheric Solid Precipitation" was adopted.

This concise classification divides atmospheric solid precipitation into ten types: snowflake, star snowflake, columnar snowflake, needle snowflake, multi-branch snowflake, axial snowflake, irregular snowflake, graupel, ice particle and hail. The first seven kinds are collectively called snow.