2. Because in modern times, people regard the first day of the first lunar month as the Spring Festival, and generally it doesn't end until at least the fifteenth day of the first lunar month. So after the fifteenth day of the first month, you can't pay a New Year call.

Generally speaking, the time to pay New Year greetings is from the first day to the fifth day. Visiting relatives and friends after the eighth day of the twelfth lunar month is regarded as worshipping the early years, and visiting relatives and friends after the fifth day of the first month and before the fifteenth day is regarded as worshipping the old age. Early old age belongs to the nature of emergency or remedy to avoid regret. There is a folk proverb: it is not too late to celebrate the New Year with a heart.

Lantern Festival is the first festival after the Spring Festival enters the New Year. During the Lantern Festival, people will eat Yuanxiao or glutinous rice balls and enjoy lanterns, which is of great harmony. From New Year's Eve to Lantern Festival, it is the busiest time of the year with the strongest flavor of the year. After the fifteenth day of the first month, people's work and life will gradually return to the right track. It can be said that the Lantern Festival is equivalent to the end of the New Year, and people no longer say "Happy New Year" to each other.