What seems wrong with this king's rebirth?

Meng Zhang died, but he lived again.It's fine if he lives, how did he become Juntian's little prince, how did Jian Binling Guang Murongli become his elder brother?What?Is he married today?What the hell is this all about?Content Tags: Having a child, love, past life, present, rebirth┃ Search keywords: Protagonist: Meng Zhang, Zhong Kunyi┃ Supporting roles: Qi Zhikan, Jian Bin; Gongsun Qian, Ling Guang; Zhi Ming, Murong Li