If people have a common understanding in some aspect.
Or there's mutual recognition on a certain topic.
I think it might include one aspect: raising an exceptional child!
Every parent, whether good or bad, probably hopes their child has a bright future.
Similarly, from the moment of birth, children are endowed with their parents' high expectations to varying degrees.
In today's society, most parents probably hope their children will excel, be successful.
Recently, Lao Ma and Chen Cang stood united on this path!
Others start raising from the cradle onwards.
Lao Ma goes further, starting directly from the sperm!
Chen Cang originally didn't want to get involved, but... when he saw Lao Ma's kid, he felt he should also put in some effort!
Actually, Lao Ma's kid is pretty decent; at thirteen, he's already one meter sixty tall, robust in build, and bears a strong resemblance to Lao Ma.
It's certain; he's definitely the biological son!