AnastasiaWun:

Thanks for all the above answers. BTW, in the novel, does the deposed villain brother succeed in becoming demon and won back his land? Or he and the priestess finally get killed by TTJ?

MingLang dies on the tower and his priestess as well die there 

 Alicetcfwl:

Xiao Ye died in the battlefield. Grandma Ye died of old age being cared for and by YQY

YQY became the emperor of the Jing Empire in disguise as TTJ?

 mparthur:

YQY became the emperor of the Jing Empire in disguise as TTJ?

Why did he have to do that? I mean, If TTJ wants to be on his search for YXW's soul, he can issue edict to appoint a regent or something, can't he?

 mparthur:

YQY became the emperor of the Jing Empire in disguise as TTJ?

No, YQY left with TTJ. Then went on to take care of Grandma Ye and Pian Ran.

 AnastasiaWun:

Why did he have to do that? I mean, If TTJ wants to be on his search for YXW's soul, he can issue edict to appoint a regent or something, can't he?

He directly left. We are only told his reign was short lived and he was crazy.

Judging by how the story goes so far and previews from the upcoming ep (they found out YBC is two-faced and have two love threads), is it possible they will deviate from the ‘TTJ marrying YBC and making her the empress’ plot? Or is that still a possibility after the nail betrayal scene (like TTJ did that anyway just to piss YWX off?)

 Alicetcfwl:

No, YQY left with TTJ. Then went on to take care of Grandma Ye and Pian Ran.

But, in the drama, one of the trailers shows YQY in a dragon robe but his hair is completely white.

 mparthur:

But, in the drama, one of the trailers shows YQY in a dragon robe but his hair is completely white.

Yes, cuz Pian Ran saves him. I'm curious to see how they play that part and if they changed it from the novel

 yeeboism:

Judging by how the story goes so far and previews from the upcoming ep (they found out YBC is two-faced and have two love threads), is it possible they will deviate from the ‘TTJ marrying YBC and making her the empress’ plot? Or is that still a possibility after the nail betrayal scene (like TTJ did that anyway just to piss YWX off?)

It is a possibility but chances are 50/50. He might in anger at YXW marry YBC after the nails.

the timeline stated above are from Novel is it? Is it gonna be different in the drama? 

 Alicetcfwl:

It is a possibility but chances are 50/50. He might in anger at YXW marry YBC after the nails.

No, TTJ never made YBC an empress.  He left her die in the jail.  

 Vhlm:

the timeline stated above are from Novel is it? Is it gonna be different in the drama? 

doubt it.  

 Alicetcfwl:

It is a possibility but chances are 50/50. He might in anger at YXW marry YBC after the nails.

So meaning there are chances that YBC die in jail without married to TTJ? 

Happy ending or sad ending? 

 Vhlm:

So meaning there are chances that YBC die in jail without married to TTJ? 

She is already TTJ's concubine.