Tempered Immortal. It's basically about a really smart normal guy who doesn't have smart root (what's required to become immortal) trying to become an immortal. It's more about strategies and intelligence than just overpowering the opponents (it still happens sometimes).
http://shushu.com.cn/b_nfg.htm
Cut Immortal is about a guy who was close to being immortal sent back in time (only his memories). He starts over with all of his previous memories and tries to change his past. This is like I Eat Tomatoes novels where the main character is super overpowered.
http://shushu.com.cn/b_vfa.htm