I will take care of your request and give you some suggestions
My brother’s family just had a baby boy. The naming of a boy broke my brain a few days ago. Many people died. Brain cells
He Xinze
He Xincheng (the word Cheng has water in it)
He Jinze or He Jincheng
He Chengyu or He Yucheng
There are many, and boys can use the combination of the above words well.