robinchwaaaan's manga / #shounen ai(2)

I have a question if you know the answer pls reply i recently continue to read this manhua again and I forgot if cheng cheng knows that wowo is his truly son. Does cinian reveal to cheng cheng that he bears a child and wowo is his son? Im really forgot the events and my curiosity is killing me

I stop reading but planning to continue it again but first I'm curious who's the seme and the uke?