How to distinguish the solar calendar from the lunar calendar, and whether the constellation is Yang or Yin?

Lunar calendar is an ancient alternative calendar in China. New Year's Eve and Dragon Boat Festival are determined according to the date of the lunar calendar. At present, Japan and South Korea use the lunar calendar except the solar calendar. Gregorian calendar, also called Gregorian calendar, was introduced from the west in modern times. After the founding of People's Republic of China (PRC), the Gregorian calendar which is in line with international standards was established. Christmas, New Year's Day, Valentine's Day and other festivals were all determined by the date of the Gregorian calendar. At present, the solar calendar and lunar calendar in China are parallel, and each has its own algorithm, which is independent and irrelevant. But the lunar calendar is generally about a month slower than the solar calendar, because the four seasons of the year are certain, and no matter what calendar, there will be no big difference. Constellations are also determined according to the solar calendar, so there are many western allusions in them.