The Lament of Autumn

Both drama have the same author so it set in the same universe. ML Xiao beicheng is a northern commander , ML Yu chanxuan is a southern commander.
Toxic relationship
Republic era
ML from Love in flame of war made a cameo appearance in The lament of autum.

Set in Republican era.
Enemies to lovers
Both leads are smart and have good chemistry.
2nd ML is a bit annoying
ML is a grey character

Both are romance dramas set in the Republic of China era. It's interesting to see the Gong brothers (My Journey to You) in the Chinese Republican era setting. Both dramas will follow a rollercoaster adventure story set against a turbulent time.

Both of the stories not only share a similar settings in republican period, but also both of the drama provid a heavy on politics plot. The romance are major part of the story yes, but both dramas provided a heavy background on the japanese colonization in that period; the war, the suffering of people from it, and the loss the comes with it..
so if you like to have a ploitical plot and not romance as the only theme the two dramas are good example.

Similarities between 100 Days of Deception and The Lament of Autumn:
- Japanese occupation era: Both dramas are set against the backdrop of the Japanese occupation, with characters navigating a turbulent and dangerous period in history.
- Patriotism and resistance: Both explore loyalty to one's country and the struggle against a hostile occupying force.
- Love amid conflict: Romance develops amid political tension, where personal feelings clash with duty and national loyalty.
- Espionage and hidden identities: Secrets, deception, and dangerous allegiances add suspense to the characters' lives.
- Personal sacrifice: The characters face difficult choices that may require them to put their feelings aside for the sake of their country.
- Historical romance with suspense: Both combine romantic tension with the dangers and uncertainties of life under Japanese occupation.

Romance dramas set in the Chinese Republican Era with similar dynamics and marriages of convenience.

Similar republican era drama.

An arrogant third master of a powerful family falls in love at first sight with a pretty young maiden and uses every means possible to force her hand in marriage, despite her harboring a crush on another man. In the beginning of a coerced marriage, she resents him and rejects all his advances and gestures of love, but their love story slowly develops after going through obstacles in times of war and chaos. However, things get complicated when her old flame returns and becomes her husband’s assistant.

Similar tragic love story set in a republican era.

Yin Jing Wan, a young woman from a wealthy merchant family, saved a young man on a train who was escaping from a rivaling warlord manhunt. When she returned home, her parents betrothed her to a childhood friend, but her fiancee was put into prison in Chengzhou for smuggling firearms and illegal Western drugs. Jing Wan decided to go to Chengzhou to rescue her fiancee. But she did not know this trip would completely change her life.

Maybe! Though a bit melodrama and slow. Don't get your hopes too high. Just give it a shot. Some might not like. But yeah....