Both show BL, and good chemistry

HIStory3: Trapped
The story of a police officer who becomes trapped in the underworld, as he develops feelings for a gang leader...

The story of Knock and Korn continues after "Together With Me" and "Bad Romance" series. What obstacles will Knock and Korn face after getting engaged.

They show the same actors we that amazing Chemistry. Both are about Gay Relationship, It is focused on Korn and Knock and how they met and all the obstacles they had to go through before they officially became a couple.

Same actress who portrait MING LAN, but with different temper. Lu Zhen is more upfront front the start.

"To escape her cruel stepmother, Lu Zhen enters the palace as an attendant. She was quickly promoted through the ranks for her pottery-making skill. During this time, she captures the heart of crown prince Gao Zhan. However, she can never be with him as social status and jealous enemies work against her at every turn. She devotes herself to politics and helps Gao Zhan defeat a coup d'etat. Though Gao Zhan can not make her his empress, he bestows her with the highest position in the land, the female prime minister."

What the Duck The Series is the prequel for What the Duck 2. The relationship of several couples who try to search for the meaning of the word ‘love’ which differ. Pop and Oat start discovering the feeling for each other.

Almost Same period (Forbidden City), very similar clothes but (Legend of Concubine Zhen Huan) seems to have more acurrate sets of clothes and everything.

Similar History!