Yes, 'Battle Through the Heavens' Season 5 picks up exactly where Season 4 concluded. The final episodes of Season 4 covered Xiao Yan's journey to the Central Plains, his arrival at the Falling Star Pavilion, and the brewing conflict with the Hall of Souls. Season 5, titled 'Battle Through the Heavens: The Three-Year Agreement', directly continues that narrative thread, focusing on the long-awaited duel with Nalan Yanran.
If you were watching the Donghua adaptation, the continuity is seamless. The production quality remains consistent, and the pacing in these new episodes really ramps up the tension for the big showdown. I remember finishing Season 4 and immediately hunting for the next episode, and Season 5 delivered without any awkward time jump or recap. It just flows right into the action.
Some people online wondered if there would be a filler arc or a soft reboot, but no, it's a direct continuation of the main storyline from the manhua and novel. The character development and power progression for Xiao Yan are linear. You see his Dou Qi cultivation and alchemy skills advancing directly from where they left off, which is satisfying for long-time followers of the series.