What does "Shell Breaking Day" mean?

The day when the shell is broken indicates the date of birth, and also refers to the birthday.

Pinyin: pò ké rì

Synonym: birthday

Make sentences:

1. On the day he broke his shell, three friends and four friends crowded into a room.

Xiao Ming's father gave him a gift on the day when he broke his shell. When he opened it, he couldn't help smiling. This is just the pen he needs.

On grandma's broken shell day, everyone raised their glasses and said, "I wish you happiness as the East China Sea and a longer life than the South Mountain." .

Tomorrow is my father's shell-breaking day. I must hurry home.

5. The gift of the broken shell day sent by my classmates is really ingenious and I can't put it down.