As a "new" baby daddy, Zhang Chen said that there is a lot of pressure to coax a baby.
When the child cries, you have to laugh;
The child laughs and you almost cry;
When the child wants to sleep, you have to tell her a story;
When the child wakes up, you have to sing a song to coax her out of bed.
…
The key is that this child's mother is also a popular queen in the entertainment industry spanning film, television, and singing.
So Zhang Chen, whose job was originally just a doctor, started a life of "not doing his job" in order to compete with her mother for favor.
Writing songs? Release a record? Publish a book? Writing a TV script?
He is omnipotent.