As Winds Rise in Changlin, the Realm Stands Firm

I dare not comment on the author's writing style, but the timeline of this book is disordered. It says that 20 years have passed since the events of Nirvana in Fire 2, and 20 years after the Chiyan Army was wronged? These two events should be about 80 years apart. It is impossible for the Master of Langya Pavilion to be active at this time. This book cannot be connected with the previous two books, Nirvana in Fire and Nirvana in Fire 2.

Since Nirvana in Fire, Xiao Mu is already the fourth generation, so how come Ling Chen and Fei Liu are still alive?