What does "two worlds" mean on birthdays?

There is no place to build a day; There is no law and order except heaven; Full days and days; One day and one place on weekdays;

Set a date for two days and two places; There is no place to accommodate the sun; Breaking the sun without land; It is more dangerous every day;

Two days and two places; Harvest day, two days and one place; Open the sky one day; Closed for one day and two places.

Note: there is no land in the sky, and the wife dies first; Without land, the husband dies first; There is no land in the sky, and the two places are happy; If a landlord comes to Langlang in a couple of days, the two places will live together for a long time; There is land in the sky and family harmony; There was no land in the sky, and he died halfway.

? On the birthday, heaven and earth are auspicious and obedient!