After a Substitute Marriage, the Cold-Faced Prince Unexpectedly Favored Him

[Substitute marriage + sweet pet + double cleansing + marriage first, love later] She had been living in the mountains since childhood, and was finally taken back by her father, but it was because she wanted to marry her step-sister. It doesn't matter, it's just getting married, but why wasn't the man who entered the bridal chamber with her on their wedding night not King Duan, who had great military exploits? But... A big rooster?