Here are some recommended ancient Chinese novels that feature the theme of falling in love after marriage:
1. "折腰" by 蓬萊客: This novel is set in the late Eastern Han Dynasty and revolves around the story of a powerful lord and a beautiful woman.
2. "春江花月" by 蓬萊客: The male protagonist, a high-ranking general in his past life, is killed on his wedding night by a poisoned drink. In his new life, he remarries the female protagonist and embarks on a journey to regain power and love.
3. "衡門之下" by 天如玉: This novel tells the story of a couple who initially have a strained relationship but gradually fall in love.
4. "長風渡" by 墨書白: The plot of this novel revolves around the love story between the male and female protagonists, featuring elements of power struggles and romance.
5. "嬌娘春閨" by 笑佳人: This novel follows the life of a young woman who marries into a wealthy family and experiences love and growth after marriage.
Please note that these recommendations are based on the provided search results and may not represent an exhaustive list of all ancient Chinese novels with the theme of falling in love after marriage.