The mistress is not a cannon fodder, the cold prince falls in love with her every night

In a book, Pei Heng is handsome and talented, a man of both civil and military talents. He is the envy of the people of the capital, a brave and skilled general who protects the country. Unfortunately, he is only a supporting role, and he appears as a paraplegic with all his limbs disabled. Su Li traveled through time and found that she had become the cannon fodder bride of the hero in the book. On the wedding day, the hero abandoned the marriage for the one he loves. You don't want me, right? Humph, I don't want you either! Su Li turned around and remarried to the hero's eldest brother, Pei Heng. What's wrong with a paraplegic? What's wrong with being unable to take care of himself? What's wrong with carrying shit and urine? A paraplegic will not spoil his concubine and destroy his wife! He will not flirt with other women! He is a thousand times and ten thousand times better than a scumbag! He also has a pair of children! Direct painless promotion...