Just finished the last chapter of 'Mang Tian Chi' last night after powering through it for three days straight. If you're coming from 'Battle Through the Heavens', you'll recognize a lot of the DNA – a young master gets humiliated, loses everything, and then embarks on a classic cultivation comeback trail. The world-building is denser in some ways, with a heavier focus on alchemy and artifact refinement systems that feel more technical than in 'BTTH'. The protagonist's drive is relentless, almost uncomfortably so at times; there's less of the found-family warmth of Xiao Yan's crew and more of a solitary, vengeance-fueled grind.
Whether it's 'worth it' really hinges on your tolerance for that kind of protagonist and a plot that's pretty married to the formula. I got a kick out of the intricate power system and the sheer scale of the conflicts later on, but I missed the character banter. It’s a solid execution of the archetype, but it won’t redefine the genre for you. My copy was full of translation hiccups, though, which sometimes yanked me right out of the immersion.