The Disguiser (2015)

Not only both series have the same production teams. Both are about secret organizations and people ready to make a sacrifice for a high purpose. Both are the stories of the calculating and cunning hero and his friends and family, he comes to his hometown and they begin to do justice either according to a prearranged plan or out-of-hand.
But D is more cheap and dragged, it looks like they scrimped on the actors' number and even left some holes in the plot. Some characters (like young hero's future wife) are just badly written. So, NiF is better.

The same Republican Era
The same war fare and spy work
The same antagonist with miserable love life and revenge
even the decor and styling are the same

A similar story where a Chinese spy has to do his mission though with a little more action in drama.

Both drama have the same vibe where the story is revolving the spy during that era. Theres a scheme, manipulative mind, revenge and just a lil bit of romance involve.

Both of them are Republican era dramas ,, Both have amazing Bromance or Brotherhood relationship ,, Both have the same painful stories of this era fighting the corruption ,, a lot of killing and action scenes in both dramas
Both you will feel how strong relationships can be formed without having it to be blood related or romantic aspects
I loved Both dramas so much

the hero in both series act like a traitor and both stories are about fighting agains Japanese but with different background (Korean and Chinese).

Both are Chinese patriotic spy stories, where action takes plays in the Japanese-occupied Shanghai. Both economize on the number of actors very much but both have some suspense and successful twists in the spy plot.

Both dramas have well chosen cast, focus on historical side of story, more accurately, both stories are about fighting agains Japanese. Authentic mise-en-scene, stunning cinematography.

Era of Japanese resistance in China. goods and bad, traitors and herso are working together against foreign invasion, despite their inside conflicts. storyline is more complex in disguiser and more politics there but yet AOTB has it's own merit, badass women protagonist! both are exciting stories about double spying, family bonds and blossoming romance in a dangerious time.

Double spy agent, communist party, war, same actor as leading, slight romance, action, both lead, female and male are fighters.

Brothers being on opposite sides and fighting for the country but still the most important are the familial ties.

Police officer Pang Hong Mei amid the many obstacles created by U.S. and Jiang spy agents, rescued Ji Danyang, a patriotic scientist who returned from the United States from the enemy spy. She accompanied Ji Danyang to Lumen City to participate in the "Water Drop Project". Enemy special forces formulated a sabotage plan codenamed "Operation Rock" and concentrated their forces and tried to destroy the "Water Drop Project." Pang Hongmei and Ji Dan Yang fought a life-and-death battle with enemy agents in Lumen, thwarted the enemy's conspiracy, protected the "Water Drop Project" and finally achieved the expected success. The couple who went through the test of life and death, also realized their dreams and firm ideals.

Set in the same period of the sino japanese war, this is a story of one supposed traitor but in fact disguises under the authority / control of the Japanese.

The cruelty of the Japanese is atrocious.

Both are patriotic Chinese spy stories about brave communists under the Japanese occupation. In Severe Winter you can see Nicky Wu - the 4th prince of the Scarlet Heart, by the way.

Similar era (Japanese occupation), different background (Korean and Chinese). Both have double agents and action, but nobody's wearing a mask in The Disguiser though