For those who are interested in reading the almost complete english translation of the novel on which the drama 'Siege in Fog/ Colour of Night' is based, you can find it here:-

First 14 chapters here:-
https://www.novelupdates.com/series/siege-in-fog/

The rest of the chapters (except for the last 2 which are still in the midst of being translated) here:-
https://theresanother.wordpress.com/siege-in-fog-迷霧圍城-about/

It is the same person who is doing the translation but somehow posted them on 2 separate sites. The chapter numbering is somewhat different on the second site (you pick up where you left off at chapter 16, not 14) but the translator explains it here:-
https://theresanother.wordpress.com/2017/07/22/☘-welcome-☘/

aah thank you so much! I'm planning on reading the novel right now:)

Thank you